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The Cometic MLS head gasket for GM LSX engines is a multi-layer steel gasket with a 4.155 in bore and .051 in thickness, using embossed outer layers with AMP coating and an uncoated stainless steel shim layer. This MLS construction conforms to sealing surfaces, requires less clamp load to reduce bore distortion, and supports reliable sealing across demanding load and finish conditions.
Cometic GM LSX 4.155in Bore .051in MLS Head Gasket - Right
