4.130 MLS Head Gasket .040 - GM LS1

The Cometic Gaskets 4.130 MLS Head Gasket .040 - GM LS1 is designed for high-performance mechanics and serious LS engine builders who require reliable sealing under extreme combustion pressures. This multi-layer steel (MLS) gasket is specifically engineered for the GM LS1 platform, known for its versatility and tunability in small-block engine applications.

Constructed with alternating layers of spring steel and elastomer-coated stainless steel, this gasket effectively distributes pressure across the combustion chamber while resisting thermal cycling and deformation. The .040-inch compressed thickness ensures optimal clamping load retention, which is crucial for maintaining cylinder-head integrity during high-performance operations.

Ideal for LS1 engine swaps and various performance builds, including naturally aspirated, turbocharged, and supercharged configurations, this gasket is designed to maintain a consistent seal across a 4.130-inch bore diameter. Cometic's rigorous manufacturing standards ensure that the gasket meets the necessary specifications for high-performance applications.