Cometic Oldsmobile 330-455 V8 4.2 inch Bore .027 inch MLS Head Gasket

If you're rebuilding the top end of your Oldsmobile 330-455 V8, or a compatible Buick, Cadillac, Chevrolet, or GMC V8, a reliable head gasket is crucial for sealing the combustion chamber. This Multi-Layer Steel (MLS) head gasket from Cometic is built to handle the demands of higher output engines, ensuring a strong seal between your cylinder head and block.

Cometic constructs these gaskets with multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and varying surface finishes, even between aluminum and cast iron blocks. This gasket has a compressed thickness of .027 inches and a 4.2-inch bore, designed to fit a wide range of V8 engines from the mid-70s through the early 80s, including popular models like the Buick LeSabre, Chevrolet Impala, and Oldsmobile Cutlass Supreme.

Because these are MLS gaskets, they don't require any additional sealants, making installation more straightforward. They are a solid option for engines that see regular use and demand a dependable seal.