Cometic Porsche 997 3.6L Twin Turbo 102mm Bore .040 inch MLS Head Gasket

This product is a Cometic Multi-Layer Steel (MLS) head gasket, specifically designed with a 102mm bore and a compressed thickness of 0.036 inches, measuring 0.040 inches before installation. It features embossed outer layers coated with Viton, a heat-resistant rubber material, and a center layer of stainless steel. MLS gaskets are built for high-output engines and don't require additional sealants, making them suitable for joining aluminum heads to either aluminum or cast iron blocks.

The multi-layer stainless steel construction offers increased strength and resistance to corrosion, while the Viton coating on the outer layers handles demanding sealing environments and surface finishes. This design helps manage the shearing forces that can occur between different block and head materials. The center shim layer can be varied to achieve different thickness requirements, providing flexibility for engine builds.