Cooling Systems

HOT transmission oil has to be COOLED to keep you on the track. Double stacked cores deliver over 40,000 BTU/HR of cooling and over 350% temperatur...

80-watt, 10-inch, 800 CFM universal electric fan. The fan is supplied as a "pusher" fan from factory which will draw air in through the grille of t...

The Fleece Performance replacement thermostat housing with auxiliary port is a direct replacement part for model years 1998.5-2007 RAM with 5.9L Cu...

34.5 inch Common Rail/VP44 Cummins Coolant Bypass Hose (Black Nylon Braided)

Replacement coolant bypass house with stainless steel braiding for our Common Rail/VP44 Cummins Coolant Bypass Kits.  34.5 inch Common Rail/VP44 C...

2003-2018 Cummins Coolant Bypass Brackets (Set of two)

Replacement O-ring Kit for all Fleece Cummins Coolant Bypass. When used with MY94 - MY2002 kits, not all O-rings will be utilized. Kits includes: ...

Complete kit to service your Fleece Performance Coolant Bypass - Includes all O-rings, fasteners, and a new thermostat. Features: Two thermostats ...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefor...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefor...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefor...

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore...

Increased Coolant Flow, Decreased Coolant Temperatures, The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefor...

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore...

Replacement EPDM hose for the Fleece Performance coolant bypass for model years 2003-2005 (Fleece part numbers FPE-CLNTBYPS-CUMMINS-0305 and FPE-CL...

Replacement EPDM hose for the Fleece Performance coolant bypass for model years 2006-2007 (Fleece part numbers FPE-CLNTBYPS-CUMMINS-0607 and FPE-CL...