FLEECE FPE-CLNTBYPS-CUMMINS-MAN-SS CUMMINS COOLANT BYPASS KIT 03-07 MANUAL TRANSMISSION W/ STAINLESS STEEL BRAIDED LINE

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 and up 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.
Application Notes:

• The 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is 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.
• For model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership [PN:68048997AA] to complete the installation.

Maximize the performance and durability of your 2003-2007 Cummins with the FLEECE FPE-CLNTBYPS-CUMMINS-MAN-SS Coolant Bypass Kit. This innovative kit enhances coolant flow, significantly lowers coolant temperatures, and is vital for maintaining the integrity of your engine.

The rear cylinders of the 5.9/6.7L Cummins are notorious for inadequate coolant flow, resulting in dangerously high coolant temperatures. This can lead to catastrophic failures, including the blowing out of freeze plugs. Our coolant bypass kit features a secondary thermostat that operates based on temperature, not pressure, addressing the issue before it escalates and ensuring even cooling across all cylinders.

• Lowers coolant temperature at the rear cylinders
• Ensures consistent temperatures across all cylinders
• Prevents damaging coolant pressure build-up
• Complete kit includes a braided hose and AN O-ring fittings for a leak-free installation
• Kits for model years 2003 and up feature premium billet hose brackets

Adding the Fleece Coolant Bypass to your vehicle is one of the best decisions you can make to enhance the reliability and longevity of your Cummins engine. Say goodbye to high-pressure build-up problems and hello to improved engine longevity!