Quick view Details AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) MSRP: Now: $1,560.00 Add to Cart Compare Quick view Details AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view Details GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view Details GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view Details GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view Details AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view Details GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view Details GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view Details GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view Details AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view Details GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view Details GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view Details GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view Details GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view Details GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view Details GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view Details GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view Details GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view Details GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view Details GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare
Quick view Details GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare
Quick view Details GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare
Quick view Details GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare
Quick view AFR AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads for 4.8L 5.3L - 64cc Chambers, Assembled (Pair) AFR 15° LS 210cc Enforcer As-Cast Cylinder Heads - 64cc Chambers Assembled Pair, Ideal for 4.8L and 5.3L Engines In Stock, Ready to Ship! AFR's 210cc LS Enforcer cylinder heads feature their advanced Permanent Mold "As-Cast" Technology on the... MSRP: Now: $1,560.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected × OK
Quick view GM GM 12629513 Intake Valves for 2014+ L86 L87 LT1 LT2 6.2L Gen V Engines Genuine GM 12629513 Intake Valve Fits 2014-Newer L86 L87 LT1 LT2 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow Stem... MSRP: Was: Now: $27.99 - $219.99 Choose Options Compare
Quick view GM GM 12678746 Exhaust Valves for 2014+ L86 L87 LT1 LT4 6.2L Gen V Engines Genuine GM 12678746 Exhaust Valve Fits 2014-Newer L86 L87 LT1 LT4 6.2L Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 6.2L engines. 1.59" Head Diameter, Sodium... MSRP: Was: Now: $31.99 - $249.99 Choose Options Compare
Quick view GM GM 12678745 Exhaust Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12678745 Exhaust Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Exhaust Valve for Gen V LT-based 5.3L engines. 1.556" Head Diameter 5... MSRP: Was: Now: $11.99 - $89.99 Choose Options Compare
Quick view GM GM 12619825 Intake Valves for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines Genuine GM 12619825 Intake Valve Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Choose Quantity for a Single Valve or Set of 8 Valves Genuine GM stock replacement Intake Valve for Gen V LT-based 5.3L engines. 1.929" Head Diameter 5... MSRP: Was: Now: $9.99 - $74.99 Choose Options Compare
Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected
Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Previous 1 2 3 4 5 6 7 Next Previous 1 2 3 4 5 6 7 Next Compare Selected
Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare
