Cometic Pontiac 326/389/421 V8 .070in MLS Cylinder Head Gasket - 4.300in Bore

The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block. Pontiac 326/389/421 V8 .070in. MLS Cylinder Head Gasket; 4.300in. Bore

• The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes
• The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements
• Requires less clamp load creating less bore distortion
• Conforms load distribution across the sealing area
• Coated On Both Sides w/Viton