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The Cometic MLS head gasket for Pontiac 326/389/421 V8 engines is a .027in-thickness, 4.300in-bore gasket featuring HP shim technology to increase clamp load around the combustion chamber for improved sealability on open-deck blocks. Multi-layer stainless construction with embossed outer layers provides rebound and corrosion resistance, while the design conforms load across the sealing area and reduces bore distortion for reliable sealing.
Cometic Pontiac 326/389/421 V8 .027in MLS Cylinder Head Gasket - 4.300in Bore
