The Cometic S&S gasket kit (no head gasket) for 4 1/8in 111inCu motors uses MLS construction with multiple embossed AMP-coated layers and uncoated stainless steel. That layered design meets challenging sealing environments and flange conditions, allows center shim variation for thickness control, and reduces required clamp load to minimize bore distortion in these big-bore motor applications.
Cometic S&S 4 1/8in 111inCu Motors .040inMls T/E Gasket Kit