Product Description
Michigan Motorsports 2.000-Inch Stainless High-Performance LS Intake Valves
21-4N Stainless Intake Valve Upgrade for Select 1997-2013 Cathedral-Port LS Heads
Upgrade compatible factory LS cylinder heads with Michigan Motorsports 2.000-inch stainless intake valves. Manufactured as one-piece forgings from high-strength 21-4N stainless alloy, these direct drop-in replacements feature hard chrome-plated stems, hardened tips, undercut stems and swirl-polished surfaces. They replace the factory 2.000-inch intake valves in the listed 1997-2013 cathedral-port LS cylinder-head applications while providing improved airflow over OEM GM valves and standard aftermarket replacements.
Key Features & Benefits
- High-Strength 21-4N Stainless Alloy: Each intake valve is manufactured from 21-4N stainless steel for increased strength and durability in stock and performance LS cylinder-head applications. This material provides a substantial upgrade over standard factory-style replacement valve construction.
- One-Piece Forged Construction: The one-piece forged design creates a strong, consistent valve structure without a separate welded head and stem. This construction is well suited for freshening compatible factory cylinder heads or assembling a mild-to-high-performance LS valvetrain.
- Chrome-Plated Stems and Hardened Tips: Hard chrome plating protects the valve stems, while hardened valve tips provide additional durability at the rocker-arm contact area. These features support dependable operation in compatible LS cylinder-head and valvetrain combinations.
- Airflow-Focused Valve Design: Undercut stems and swirl-polished surfaces are designed to improve airflow compared with OEM GM intake valves and standard aftermarket replacements. The streamlined profile makes these valves a practical upgrade for compatible cathedral-port LS cylinder heads.
- Direct 2.000-Inch Replacement: Designed as a direct drop-in replacement for the factory 2.000-inch intake valves used in the listed cylinder-head castings and LS engine codes. The application-specific sizing allows compatible heads to retain their original intake-valve diameter.
Notes
- Choose a single intake valve or a complete set of eight intake valves.
- Will not fit cylinder-head casting numbers 706 or 862.
Key Fitments
- 1997-2013 Cathedral Port LS Cylinder Heads
- Compatible Cylinder Head Castings: 243, 799, 317, 241, 853, 806
- LS1, LS6, LS2, LQ4, LQ9, LS4, LY2, L20, LY5, LMG, LMF, LH6, LC9, LH8, LH9, L33
