2013-2018 RAM 3500 6.7L CUMMINS COOLANT BYPASS KIT

Coolant Bypass Kit | 2013–2018 Ram 3500 6.7L Cummins

Keep your 2013–2018 Ram 3500's 6.7L Cummins protected from one of the platform's most preventable failures with the Fleece Performance Coolant Bypass Kit. This kit addresses the factory coolant flow restriction in the cylinder head that allows hot, stagnant coolant to pool around the injector cups — the root cause of injector cup erosion, coolant contamination, and costly cylinder head repairs on the 6.7L Cummins.

Why This Kit Is Essential for the 2013–2018 6.7L

The 2013–2018 Ram 3500 6.7L Cummins is a workhorse engine, but its cylinder head coolant flow design leaves injector cups vulnerable to localized overheating. As coolant stagnates around the cups, corrosion accelerates and the cup sealing surface erodes. Once a cup fails, coolant enters the combustion chamber — leading to white smoke, misfires, hydrolocking, and a repair bill that dwarfs the cost of this kit. The Fleece coolant bypass kit keeps coolant moving continuously, dramatically extending injector cup and head gasket life.

Features

• Corrects factory coolant flow restriction specific to the 2013–2018 6.7L application
• Eliminates hot spots and stagnant coolant around injector cups
• Reduces injector cup erosion and failure risk
• Prevents coolant intrusion into the combustion chamber and fuel system
• Complete kit with all necessary hardware for installation
• From Fleece Performance — a trusted name in Cummins reliability upgrades

Fitment

• 2013–2018 Ram 3500 6.7L Cummins

High-mileage tow rigs and work trucks put enormous demands on the cooling system. Don’t let a preventable failure sideline your Ram 3500 — install the Fleece coolant bypass kit and protect your investment.