Cometic GM LS1 SB 4.100in Bore .062in MLS-5 Head Gasket

When you're rebuilding the top end of your GM LS Gen-3 or Gen-4 V8 engine, getting the head gasket right is crucial for a solid seal. This Cometic MLS-5 head gasket is built for that job, featuring a 4.100-inch bore and a compressed thickness of 0.062 inches, designed to work with LS1, LS2, LS3, and LS6 engines.

What makes these gaskets stand out is their multi-layer steel (MLS) construction. They use multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping them resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing conditions and different surface finishes. This design means they seal well without needing any extra sealants, and they're great for mating aluminum heads to either aluminum or cast iron blocks, handling the stresses that can come from those combinations.

This gasket is a popular choice for a wide range of GM vehicles, from performance cars like the Camaro and Corvette to trucks and SUVs like the Silverado and Escalade. It's a well-built component that helps ensure your engine's combustion chambers are sealed tight.