Mercury-Mercruiser 938-8M0115136 CYL HEAD-COMPLETE

All new Quicksilver cast iron cylinder head, hardened valve seats press fit into the cylinder head with stainless steel valves featuring seats treated with a cobalt‑chromium alloy for extreme durability. This cylinder head is for applications using roller rocker arms.
2000‑2015 MCM (sterndrive) 4.3L & 4.3L MPI
4.3L 4V Crate Engines
4.3L 4V Plus Series Engines
2000‑2015 4300 LU3 automotive, truck & industrial

*NEW* QUICKSILVER CYLINDER HEADS from Mercury Remanufacturing
Quicksilver now offers a wide variety of new cast iron cylinder head assemblies built for maximum durability in extreme applications. All Quicksilver cylinder heads feature hardened seats on the intake and exhaust ports. Exclusive to Quicksilver are Black‑X Composite valves that are stainless steel valves with seats treated with a cobalt‑chromium alloy and black plasma nitriding. This composition provides extreme durability when using gasoline and compatibility with alcohol and alternative fuels.