Big Boss in-frame overhaul kit for Cummins X15 EPA21 high-horsepower engines. High-quality steel pistons and liners, DLC coating on critical components, all gaskets and O-rings, piston oilers included.
OEM cross: 5612134, 6324450.
2-year limited warranty.
Genuine PDI parts supplied and installed by TDC Truck and Diesel.
