Looking for a way to keep your 5.9 Cummins engine cool? Check out our Fleece Coolant Bypass Kit! This kit lowers coolant temperatures at the rear cylinders, ensuring consistent temperatures across all cylinders. It also prevents damaging coolant pressure build-up. Complete with braided hose and AN O-ring fittings, this kit is easy to install with no leaks. Kits for MY 2003+ include billet hose brackets. Keep your engine running cool and consistent with our Fleece Coolant Bypass Kit!
• Prevents pressure build-up and failure of rear freeze plugs
• Keeps all six cylinders at consistent temperature
• Easy to install – takes only minutes
• Precision engineered for a perfect fit