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Cometic's MLS head gasket for Chevrolet Gen‑1 Small Block V8 is built to provide durable sealing for high‑output engines and rebuilds. It fits a 4.200 in bore with a nominal 0.051 in thickness and valve pocketing plus steam holes for head compatibility. The gasket combines embossed stainless steel outer layers coated with Viton and an uncoated shim center to resist corrosion, accommodate thickness changes, conform load across the sealing area, and reduce clamp load to limit bore distortion.
Cometic Chevy Gen-1 Small Block V8 .051in MLS Cylinder Head Gasket - 4.200in Bore
