Cummins 6.7 Cylinder Heads

At stock power levels the 6.7L Cummins head gasket is robust. Performance builds running compound turbos and aggressive tuning can exceed factory clamping capacity — fire ring gaskets and upgraded studs are the standard solution.

A fire ring gasket has a machined groove around each combustion chamber with a metal ring insert that improves sealing under high cylinder pressure. It is a bolt-on upgrade that requires no machining and is significantly less expensive than a full head replacement.