Product Description
Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves
Fits 1997–2013 Cathedral Port LS Cylinder Heads | Multiple GM Castings
Michigan Motorsports 1.550" LS exhaust valves are designed as a direct OEM-style replacement for factory cathedral port LS cylinder heads. These valves are an excellent solution for refreshing worn valvetrain components on stock or mildly modified LS engines, restoring proper sealing, compression, and exhaust flow. Manufactured to factory dimensions, they drop directly into the original guides and work seamlessly with OEM retainers, locks, and valve springs, making them ideal for reliable street builds and budget-conscious rebuilds.
Key Features & Benefits
- OEM 1.550" Exhaust Valve Size: Direct replacement for factory LS exhaust valves, maintaining correct valve geometry, seat contact, and exhaust flow characteristics.
- Drop-In Fitment: Designed to install with factory guides, seals, retainers, locks, and springs for hassle-free rebuilds without additional machining.
- Ideal for Stock & Mild Performance Builds: Perfect for daily drivers, tow vehicles, and lightly modified engines where OEM reliability is the priority.
- Multiple Purchase Options: Available as a single valve or a complete set of eight to match your rebuild needs.
- Budget-Friendly Refresh Solution: An affordable alternative to performance valves when upgrading is not required.
Cylinder Head Compatibility
- Fits Cathedral Port LS Cylinder Heads
- Head Casting Numbers: 243, 799, 706, 862, 317, 241, 853, 806
Engine Compatibility
- LS1, LS6, LS2
- LQ4, LQ9, LS4
- LY2, L20, LY5, LMG, LMF
- LH6, LC9, LH8, LH9
- LR4, LM7, L59, L33
Product Videos
Custom Field
Product Reviews
1 Review Hide Reviews Show Reviews
-
Replacement valves
Everything fit flawlessly, used these to rebuild some heads and had no problems
