4.200 MLS Head Gasket .080 - SBC

The Cometic Gaskets 4.200 MLS Head Gasket .080 – SBC (Small Block Chevy) is a precision-engineered cylinder head gasket designed for Small Block Chevrolet engines requiring a 4.200-inch bore with 0.080-inch compression thickness. This multi-layer steel gasket represents the evolution of gasket technology, combining durability with the sealing integrity demanded by modern and classic engine builders alike.

The 0.080-inch compression thickness sits at a critical balance point for Small Block Chevy applications—thick enough to maintain proper combustion chamber volume while thin enough to preserve head gasket clamping force across the entire sealing surface. Cometic's multi-layer steel construction distributes loading pressure uniformly, reducing the risk of localized hot spots that can lead to gasket failure or cylinder leakage. The 4.200-inch bore diameter specification ensures precise fit for SBC blocks engineered to this standard, eliminating the mismatch problems that can arise from undersized or oversized gaskets.

This gasket serves engine builders, performance enthusiasts, and repair technicians working on Small Block Chevy engines in street, race, and restoration applications. Whether you're rebuilding a classic Chevy small-block, upgrading an existing engine, or completing a high-performance build, proper head gasket selection directly impacts reliability and peak operating efficiency. The 4.200 MLS head gasket .080 is engineered to handle the demands of boosted and naturally aspirated builds where compression stability matters.

Cometic Gaskets has established itself as a precision gasket manufacturer trusted across the automotive aftermarket. The MLS (Multi-Layer Steel) design represents a proven standard in cylinder head gasket engineering, offering superior reusability and dependable sealing across wide temperature and pressure ranges typical of modified Small Block Chevy engines.