4.165 MLS Head Gasket .040 SBM W7/W8/W9 Heads

The 4.165 MLS Head Gasket .040 for Small Block Mopar W7/W8/W9 Heads is designed for builders and mechanics engaged in serious small-block engine rebuilds and performance upgrades. This gasket is essential for ensuring optimal performance in both classic and modern Mopar platforms.

Constructed from multi-layer steel (MLS), this gasket provides superior sealing integrity under extreme conditions. The .040-inch thickness is tailored for W-series cylinder head applications, ensuring correct compression ratios and optimal quench distances. The advanced design helps prevent localized hot spots and combustion gas blowby, which are common issues with older composite gaskets.

Enthusiasts rebuilding a Small Block Mopar engine for street performance, off-road duty, or racing will find this OEM-equivalent gasket invaluable. Its multilayer construction resists fuel additives and coolant corrosion, making it a reliable choice for modified engines running higher boost or aggressive ignition timing.