What is bullet proofing?
Correction to the cooling and oil system, including installation of ARP head studs to avoid cylinder head from being able to lift, replacement from stock to a stronger stud made by ARP head studs.
Why do we bullet proof?
Our goal is simple – diesel reliability. Our products make diesels better! We have products that help nation-wide fleets, heavy-use, first responders, trailer towers, and, yes, everyday diesel drivers like you.