FLEECE FPE-CLNTBYPS-CUMMINS-12V 12V COOLANT BYPASS KIT 1994-1998

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.

This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.

Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.

Benefits:

• Lowers coolant temperature at the rear cylinders
• Ensures consistent temperatures across all cylinders
• Prevents damaging coolant pressure build up
• Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.

Kits for MY 2003+ include billet hose brackets.

Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature / over-pressure condition.

The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger.

The heat exchanger is not a fluid cooler; it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.

All ‘07-‘13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.

The FLEECE FPE-CLNTBYPS-CUMMINS-12V 12V Coolant Bypass Kit is engineered to revolutionize your 1994-1998 5.9/6.7L Cummins engine's cooling efficiency. This innovative kit targets the critical issue of inadequate coolant flow to the rear cylinders, which often results in dangerously high temperatures and potential engine failure.

By utilizing a secondary thermostat that responds to temperature rather than pressure, this bypass kit preemptively addresses coolant flow issues, maintaining consistent temperatures across all cylinders. Prevent catastrophic failures and improve your engine's longevity and reliability with this essential upgrade.

• Increased coolant flow to rear cylinders
• Lowered coolant temperatures, enhancing overall performance
• Prevents pressure build-up that can damage engine components
• Complete kit includes high-quality braided hose and AN O-ring fittings for a secure, leak-free installation
• Billet hose brackets included in kits for MY 2003+

The Fleece Coolant Bypass Kit is not just an enhancement; it is a vital modification for anyone serious about optimizing their Cummins engine's performance. This kit is especially recommended for those operating in warm climates or with high horsepower applications where maintaining optimal coolant flow is critical. Don't wait for damage to occur—invest in the FLEECE Coolant Bypass for peace of mind and superior engine health.