4.500 MLS Head Gasket .040 - BBM

The Cometic Gaskets 4.500 MLS Head Gasket .040 is a premium multi-layer steel cylinder head gasket designed for serious big-block engine builders and mechanics who require reliable, leak-free combustion sealing. This gasket is suitable for both high-performance and stock applications, ensuring precision bore sizing and consistent clamping loads are maintained.

Constructed from multiple thin steel layers with elastomer coatings, the MLS gasket provides superior sealing performance compared to traditional composite designs. The .040-inch thickness is critical for achieving proper valve timing and pushrod geometry when combined with your cylinder head and block. Cometic's manufacturing process guarantees precise bore sizing at 4.500 inches, minimizing leakage and ensuring consistent clamp load distribution.

Engine builders and experienced DIY mechanics trust Cometic Gaskets for their street engines, truck applications, and race-ready builds that demand robust head sealing. This gasket is compatible with various big-block engine platforms, making it an essential component for those looking to rebuild or upgrade their engines.