Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .027in MLS Cylinder Head Gasket - 4.280in Bore - RHS

Cometic Gasket is known for making well-built sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example. It's built for GM's L18 Vortec 8100 Gen-VII Big Block V8 engines, fitting a range of trucks and SUVs like the Chevrolet Silverado 2500 HD and GMC Sierra 3500. This gasket is designed to handle the demands of high-output engines, ensuring a solid seal between your cylinder heads and block without needing any extra sealants.

This gasket uses multiple layers of stainless steel, which gives it strength and helps it resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C) and works well with different block and head materials, including aluminum and cast iron. The center layer is stainless steel and can be varied in thickness; in this case, it's set to provide a compressed operating thickness of 0.098 inches with a 0.027-inch shim for specific applications. This construction means it can handle the forces created when mating different metals, like aluminum heads to cast iron blocks.