Cummins CM871, CM2250, CM2350, X15 Cooler Bypass Kit.

Cooler bypass kit. Includes pump fitting with o-ring, engine block plate with o-ring, 2ea bolt style fittings with o-rings. “Diamond” shape plate and “tear drop” look like fitting those have 1-Inch NPT(Pipe) thread for a fittings of your choice. We do not provide any fittings due to a broad variety of applications and preferences. Any hydraulic shop will have the fittings you need. 

Part # 0822-4

This kit will supply coolant from the pump to the back of the engine block and sleeper heater.