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This Cometic MLS head gasket is specified for GM LS Gen-3/4 small block V8s with a 4.190" bore and .066" compressed thickness. The gasket's embossed outer layers, coated with Viton or AMP as noted, and a center shim layer manage clamp load and thickness variations while conforming sealing surfaces to limit bore distortion and maintain reliable combustion sealing under demanding conditions.
Cometic GM LS1 SB 4.190in Bore .066in MLS Head Gasket
