4.060 MLS Head Gasket .040 - GM LS1

The Cometic Gaskets 4.060 MLS Head Gasket .040 – GM LS1 is a multi-layer steel cylinder head gasket designed specifically for GM LS-series engines. This gasket is essential for maintaining precision compression control in both stock and modified LS1 builds. It effectively seals the critical interface between the cylinder head and engine block, ensuring reliable containment of combustion pressure and thermal stress.

Constructed from multi-layer steel (MLS), this gasket offers superior longevity and resistance to thermal cycling compared to traditional composite designs. The .040-inch compression thickness is crucial, as it directly impacts combustion chamber volume and compression ratio. MLS gaskets are engineered to accommodate minor surface irregularities, providing a consistent seal across repeated heat cycles and reducing the risk of coolant or oil seepage.

Ideal for LS1 engine overhauls, head gasket replacements, and engine rebuilds, this gasket meets OEM specifications. Both street and competition users rely on Cometic gaskets to maintain proper sealing and compression integrity during high-performance applications. With its precise engineering, the 4.060 MLS Head Gasket is a trusted choice for those seeking reliability in demanding conditions.