Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
Cometic MLS head gasket for GM LSX Gen‑4 small block V8 with a 4.125" bore and nominal .030 in thickness, left-hand side for 18-bolt heads. Intended for high-output engines, it requires no sealants and suits aluminum heads on aluminum or cast-iron blocks. Constructed from embossed multi-layer stainless steel with Viton-coated outer faces and an uncoated shim, it resists corrosion, spreads clamping loads and reduces required clamp stress.
Cometic GM LSX Gen-4 Small Block V8 .030in MLS Cylinder Head Gasket - 4.125in Bore - LHS
