felpro head gasket, multi-layer steel, 4.380 in. bore, .041 in. compressed thickness, for chevrolet, big block, each

Fel-Pro PermaTorque MLS head gaskets provide the robust seal needed to contain peak combustion pressures and temperatures and to withstand the significant casting motion encountered in many of today's automotive engines. Each gasket features multiple layers of stainless steel, precisely engineered sealing beads, and advanced polymer coatings to maintain a proper contact pressure between the cylinder head and block. Unlike other multi-layer steel head gaskets, PermaTorque MLS head gaskets also feature a proprietary blue aftermarket coating that accommodates a wider range of surface finishes. Each gasket is manufactured using precision tooling to ensure exact sealing bead location and profile.