Cometic Oldsmobile Gen-2 Rocket V8 .040in MLS Cylinder Head Gasket - 4.270in Bore

This Cometic Multi-Layer Steel (MLS) head gasket is built with embossed outer layers coated in Viton, a heat-resistant rubber material rated up to 482°F. The compressed operating thickness is .040 inches, and it features a 4.270-inch bore, making it suitable for Oldsmobile Gen-2 Rocket V8 engines and a wide range of other vehicles from the 1970s and early 80s, including models like the Buick LeSabre, Chevrolet Impala, and Oldsmobile Cutlass Supreme.

MLS gaskets are ideal for sealing aluminum heads to either aluminum or cast iron blocks because they can handle the shearing forces that arise from the different expansion rates of these metals. The multiple stainless steel layers provide increased strength and resilience, helping the gasket rebound and resist corrosion. This construction means you don't need to use additional sealants; the gasket is designed to seal effectively on its own, even with various surface finishes.