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Cometic MLS cylinder head gasket for Pontiac 326/389/421 V8 (4.300in bore, .060in compressed thickness) combines three to five stainless steel layers for strength and rebound. Outer embossed faces are coated with Viton rubber designed for harsh sealing environments and surface finishes and are heat resistant to 250°C. A center uncoated shim layer allows thickness variation, evens clamp load distribution and helps limit bore distortion while maintaining reliable sealing.
Cometic Pontiac 326/389/421 V8 .060in MLS Cylinder Head Gasket - 4.300in Bore
