Cometic 75-87 Buick V6 196/231/252 Stage I & II 4.02 inch Bore .030 inch MLS Head Gasket

This Multi-Layer Steel (MLS) head gasket from Cometic is built with multiple embossed stainless steel layers, featuring Viton rubber coating on the outer layers. The compressed operating thickness is precisely 0.030 inches, and it's designed for a 4.02-inch bore, making it a strong choice for Buick V6 engines from 1975-1987, including models like the Regal and LeSabre, as well as fitting a wide range of other GM vehicles.

MLS gaskets are ideal for sealing aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as they can handle the shearing forces that arise from the different materials. The multiple stainless steel layers provide increased strength and resistance to corrosion, while also allowing the gasket to rebound. The Viton coating on the outer layers is heat resistant up to 482°F (250°C), designed to perform reliably in demanding sealing environments and on various surface finishes. The center layer is uncoated stainless steel, which can be adjusted to meet different thickness requirements.

Because these gaskets are designed for high-output engines and are made from robust materials, they require no additional sealants, simplifying installation. This makes them a popular choice for engine rebuilds where a dependable seal is critical.