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The Cometic HP‑shim MLS head gasket for Chevrolet Gen‑I small block V8 (.040 in thickness, 4.200 in bore, 18/23 degree heads) uses multiple embossed layers of AMP coating and stainless steel to improve sealability around the combustion chamber. The uncoated shim center layer evens load distribution, requires less clamp load to reduce bore distortion, and the embossed outer layers meet harsh sealing demands with Viton-coated surfaces.
Cometic Gasket Chevrolet Gen-I Small Block V8 .040in MLS Cylinder Head Gasket 4.200in Bores
