Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .045in MLS Cylinder Head Gasket - 4.450in Bore - RHS

This Cometic Multi-Layer Steel (MLS) head gasket is built with a specific design in mind for high-output engines. It features multiple embossed layers of stainless steel, with the outer layers coated in Viton, a heat-resistant rubber material rated up to 482°F. This construction is ideal for sealing aluminum heads to either aluminum or cast iron blocks, as it can handle the shearing forces that can occur between dissimilar metals. The compressed operating thickness is 0.098 inches, and the bore size is 4.450 inches, making it a solid choice for GM L18 Vortec 8100 Gen-VII Big Block V8 engines.

The multi-layer steel design gives these gaskets increased strength and the ability to rebound, which helps them resist corrosion and maintain a seal under demanding conditions. Unlike some older gasket types, these MLS gaskets don't require any additional sealants, simplifying installation. The center shim layer is uncoated stainless steel and can be varied to meet different thickness requirements, ensuring a precise fit for your application. This gasket fits a range of popular GM trucks and SUVs, including models like the Chevrolet Silverado 2500 HD and GMC Yukon XL 2500 from the early 2000s.