Coolant Bypass Kits

Wehrli Duramax Coolant Plug

Fleece Performance 03-18 Cummins Coolant Bypass Service Kit

Fleece Performance 07.5-16 6.7L Cummins Coolant Bypass Kit w/ Stainless Steel Braided Line

Fleece Performance 94-18 Dodge 2500/3500 Cummins Replacement O-Ring Kit For Coolant Bypass Kit

Fleece Performance 06-07 Auto Trans Cummins Coolant Bypass Kit w/ Stainless Steel Braided Line

Fleece Performance 03-05 Auto Trans Cummins Coolant Bypass Kit w/ Stainless Steel Braided Line

Fleece Performance 13-16 Dodge 6.7L Cummins Coolant Tank Assembly

Wehrli 11-16 Duramax LML Coolant Bypass Kit w/ Plug

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...

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...

Another product from Fleece Performance built out of necessity is the 2003-2013 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...