Cometic MLS cylinder head gasket for Pontiac 326/389/421 V8 (4.300in bore, .098in compressed thickness) applies HP shim technology to increase clamp load and improve sealability around the combustion chamber on open-deck blocks. Multiple embossed stainless steel layers combine AMP coating and uncoated center shims with Viton-coated outer faces. The design permits thickness variation, evens clamp load distribution, reduces bore distortion and meets harsh sealing environment requirements.
Cometic Pontiac 326/389/421 V8 .098in MLS Cylinder Head Gasket - 4.300in Bore