Fleece Performance 03-07 Dodge 5.9L Cummins Coolant Bypass Kit (03-05 Auto Trans)

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. Recommended Cross Sell Skus - FPE-351-0304/FPE-DPK-59-0307

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

The Fleece Performance Coolant Bypass Kit for 2003-2007 Dodge Ram trucks equipped with 5.9L Cummins engines addresses a common issue of inadequate coolant flow to the rear cylinders, which often results in high coolant temperatures and potential engine failure. This comprehensive kit enhances engine reliability by adding a secondary thermostat that operates based on temperature, ensuring balanced cooling across all cylinders and preventing excessive pressure buildup. Installation includes braided hoses and AN O-ring fittings, providing a leak-free connection, while billet hose brackets for MY 2003+ models ensure secure placement. Proper coolant flow is critical for engine longevity, especially in high-temperature conditions, and this bypass kit effectively lowers rear cylinder temperatures, reduces pressure, and safeguards against freeze plug blowouts and other damage caused by overheating. The kit's design also allows for the removal of the factory transmission fluid heat exchanger in models from 2003 to 2007 with automatic transmissions, which is unnecessary in warm climates or high-performance applications, further improving system efficiency. This upgrade is essential for maintaining optimal engine temperatures, preventing catastrophic failures, and extending the lifespan of your Dodge Ram's Cummins engine. The Fleece Coolant Bypass Kit is a vital addition for serious truck owners seeking improved cooling performance and engine durability in demanding driving conditions.

Features:

• Includes braided hose and AN O-ring fittings for leak-free installation

• Ensures consistent cylinder temperatures for improved engine performance

• Lowers coolant temperature at the rear cylinders to prevent overheating

• Prevents damaging coolant pressure buildup and potential failure

• Compatible with 2004-2007 Dodge Ram 2500 and 3500 with 5.9L Cummins engines

• Removes factory transmission fluid heat exchanger in models from 2003-2007 with automatic transmissions for improved cooling efficiency

Fitment:
2004 Dodge Ram 2500 SLT
2004 Dodge Ram 2500 ST
2004 Dodge Ram 3500 SLT
2004 Dodge Ram 3500 ST
2005 Dodge Ram 2500 Laramie
2005 Dodge Ram 3500 Laramie
2005 Dodge Ram 3500 SLT
2005 Dodge Ram 3500 ST

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Carb Eo Number: D-834-9
Regular Stock: t
Units Per Sku: 1