The Cometic MLS cylinder head gasket for GM/Mercury Marine Big Block V8 Gen-IV/V/VI is a multi-layer steel head gasket that seals high-output engines. This .030" nominal gasket with a 4.580" bore installs with four bolts in the lifter valley and requires no sealants. Embossed stainless outer layers coated with Viton resist harsh sealing conditions while an uncoated stainless shim layer allows precise thickness control and improves load distribution across the sealing surface.
Cometic GM/Mercury Marine Big Block V8 Gen-IV/V/VI .030in MLS Cylinder Head Gasket - 4.580in Bore