Does the 6.7L Cummins have head gasket problems?
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.
What is a fire ring gasket on the 6.7L Cummins?
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.
About the 6.7L Cummins
The 6.7L Cummins is the current-generation diesel in Ram heavy-duty trucks, delivering impressive towing capacity with a track record that's being built in real-world use. Cylinder head sealing and valve train integrity are the first areas to address on high-mileage, performance-tuned, and hard-towing examples.
Head sealing for high output
The 6.7L Cummins in performance tune produces cylinder pressures that challenge factory head gasket retention. Upgraded heads, fire ring gaskets, and quality studs are the correct solution.
Fire ring gaskets
Fire ring gaskets provide superior combustion sealing for 6.7L Cummins builds running elevated boost and injection pressure — a cost-effective upgrade before a full head replacement is required.
Built for long service life
The 6.7L platform is designed to last. Parts here are chosen to restore and exceed factory reliability for the trucks doing the heaviest work.
