Description
Michigan Motorsports Stainless High Performance 2.165"/1.590" Valve Set.Fits 2007-Later Rectangle Port Head Casting Numbers 821 823 5364 Fits Engine Codes: L99 L76 L77 L92 LY6 L9H L94 L96.Made from high strength 21-4N Stainless Alloy, these one-piece forgings feature hard chrome plated stems and hardened tips for durability..Undercut stems and swirl polishing improve flow over the OEM GM valves and standard aftermarket replacements. These valves are designed to be a direct drop-in replacement for the factory 2.165" intake and 1.59" exhaust valves on the applications listed above and below..Michigan Motorsports' stainless valves are a great upgrade for your factory LS cylinder heads.