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Cometic MLS head gasket for GM LSX Gen‑4 small block V8 with a 4.125" bore and nominal .036 in thickness, left-hand side. Built for modern high-output engines, it seals without sealants and accommodates aluminum heads on aluminum or cast-iron blocks. Multiple embossed stainless steel layers with Viton-coated outer faces and an uncoated shim layer offer rebound, corrosion resistance, improved sealing across surfaces and reduced clamp load to help limit bore distortion.
Cometic GM LSX Gen-4 Small Block V8 .036in MLS Cylinder Head Gasket - 4.125in Bore - LHS
