Fleece Performance Coolant Bypass Kit for 2019-2022 Ram 2500/3500 (6.7L) FPE-CLNTBYPS-CUMMINS-19

Fits select 2019-2022 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins engine.

The 6.7L Cummins engine often suffers from inadequate coolant flow to the rear cylinders, leading to localized hot spots and excessive pressure build-up. This thermal imbalance can cause external freeze plugs to blow or, more critically, dislodge the smaller diameter plugs located under the valve cover. The Fleece Performance Coolant Bypass Kit addresses this vulnerability with a patent-pending design that integrates a secondary thermostat. Unlike other kits that rely on pressure relief, this system operates based on temperature, ensuring consistent coolant flow across all six cylinders before pressure becomes a factor.

Built for long-term reliability and an OE-style fit, this kit includes high-quality braided hoses and AN O-ring fittings to provide a secure, leak-free seal. By stabilizing temperatures at the rear of the block, you protect your engine from catastrophic failure and improve the overall longevity of the cooling system.

• Improved Cooling: Lowers coolant temperatures at the rear cylinders by increasing flow.
• Temperature-Based Control: Secondary thermostat activates based on heat rather than waiting for pressure spikes.
• Consistent Thermal Gradient: Ensures even temperatures across the entire cylinder head.
• Durable Construction: Includes braided hose and AN O-ring fittings for maximum leak protection.
• MPN: FPE-CLNTBYPS-CUMMINS-19