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The Cometic MLX head gasket for Pontiac 428/455 V8 engines (.051in) uses HP shim technology to increase clamp load around the combustion chamber without increasing bore distortion. Multi-layer stainless steel construction with embossed outer layers and AMP coatings provides rebound and corrosion resistance. Specified for 4.380in bore engines with no water holes, it’s built to strengthen sealing on high-output V8 builds.
Cometic Pontiac 428/455 V8 .051in MLS Cylinder Head Gasket - 4.380in Bore - No Water Holes
