Cometic Chevy Mark-IV GM Gen-V/VI Big Block V8 .030in MLS Exhaust Mani Gasket Set-2.015in Round Port

This set includes the Cometic Multi-Layer Steel (MLS) exhaust manifold gaskets specifically sized for a 2.015-inch round port. These gaskets are designed for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 engines, and they come .030 inches undersize, which is a common size for engine rebuilds or modifications where clearances might be tighter.

Cometic builds these gaskets using three to five layers of stainless steel. This construction gives them increased strength and helps them resist corrosion, while also allowing them to rebound and maintain a seal under various conditions. The outer layers are embossed and coated on both sides with Viton rubber, a material that can handle temperatures up to 482°F (250°C) and works well in tough sealing environments with different surface finishes and load conditions. This makes them a solid option for keeping your exhaust manifolds sealed tight.

These gaskets fit a wide range of classic and some later model GM vehicles, including popular choices like the Chevrolet C10 Pickup, Camaro, and Impala from the mid-60s through the mid-70s, as well as some trucks up into the 90s. Always double-check the fitment details to ensure they match your specific application.