Cometic Pontiac 326/389/421 V8 .030in MLS Cylinder Head Gasket - 4.300in Bore

Cometic Gasket is known for making well-built sealing solutions for a wide range of engines. This multi-layer steel (MLS) cylinder head gasket is specifically made for Pontiac 326, 389, and 421 V8 engines, and it's sized at .030 inch oversize with a 4.300 inch bore. It's designed to handle the demands of these classic V8s, ensuring a solid seal between your cylinder head and engine block.

The advanced HP shim technology in this gasket helps increase the clamping force around the combustion chamber. This is particularly beneficial for open deck block designs, like those found in many Pontiac V8s, as it improves the sealability and helps prevent leaks. The outer layers are embossed and coated with Viton, a material known for its resistance to heat and fluids, further enhancing the gasket's ability to maintain a tight seal under operating conditions. This gasket fits a variety of Pontiac models from the late 1950s through the mid-1960s, including the Bonneville, Catalina, and GTO.