Coolant Bypass Kits

BLOX Racing Honda K-Series Coolant Hose Plug - Silver

6.7L Cummins Thin Flange #10 JIC Male Fitting for Coolant Port Behind Water Pump. Press Fit Connection with High Temp O-Ring Seal and Mounting Bolt Tab.

6.7L Cummins Thick Flange #12 JIC Male Fitting for Coolant Port Behind Water Pump. Press Fit Connection with High Temp O-Ring Seal and Mounting Bolt Tab.

Fleece Performance 98.5-07 Dodge 2500/3500 Cummins Replacement Thermostat Housing w/Aux Port

Fleece Performance 13-18 RAM 2500/3500 6.7L Cummins Coolant Bypass Kit

Fleece Performance 07.5-12 Dodge/RAM 2500/3500 6.7L Cummins Coolant Bypass Kit

Fleece Performance 2019+ Ram 2500/3500 Cummins 6.7L Coolant Bypass Kit

Wehrli Duramax Coolant Plug

Fleece Performance 94-98 12V Coolant Bypass Kit w/ Stainless Steel Braided Line

Fleece Performance 98.5-02 VP Coolant Bypass Kit w/ Stainless Steel Braided Line

Fleece Performance 03-07 Manual Transmission Cummins Coolant Bypass Kit w/ SS Braided Line

Fleece Performance 03-18 Cummins Coolant Bypass Service Kit

Another product from Fleece Performance built out of necessity is the 1998.5-2002 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300-350hp engine. When the horsepower is increased there is an increased...

Fleece Performance Universal Pre-Formed 5/8in ID Hose w/ 90 Deg. Ends/1in ID T-Fitting

Another product from Fleece Performance built out of necessity is the 1998.5-2002 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300-350hp engine. When the horsepower is increased there is an increased...