Fleece Performance FPE-CLNTBYPS-CUMMINS-0607-SS Cummins Coolant Bypass Kit for 2006–2007 Automatic Transmission Models

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. 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. Cummins Coolant Bypass Kit (2006-2007 Auto Trans) w/ Stainless Steel Braided Line

• 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 Cummins Coolant Bypass Kit improves coolant flow to the rear cylinders of 5.9L and 6.7L Cummins engines. Its secondary thermostat operates based on temperature rather than excessive pressure, helping maintain more consistent temperatures across all six cylinders and reduce the risk of damaging coolant pressure buildup.

Key Features & Performance Benefits

• Improves rear-cylinder coolant flow to help lower coolant temperatures.
• Helps maintain consistent temperatures across all cylinders.
• Operates according to coolant temperature to address the issue before excessive pressure develops.
• Includes a stainless steel braided hose and AN O-ring fittings for a leak-free installation.

Key Product Specifications & Technical Data

• Brand: Fleece Performance
• Part Number: FPE-CLNTBYPS-CUMMINS-0607-SS
• Product Type: Cummins coolant bypass kit
• Application: 2006–2007 Cummins models with automatic transmission
• Engine Platform: 5.9L and 6.7L Cummins
• Bypass Control: Secondary thermostat operated by temperature
• Hose Type: Stainless steel braided line
• Fitting Type: AN O-ring fittings

What's Included in the Box

The complete kit includes the stainless steel braided hose and AN O-ring fittings. For the 2003 and newer applications, kits include billet hose brackets. On 2003–2007 5.9L automatic-transmission applications, installation eliminates the factory transmission fluid heat exchanger, which is designed to warm transmission fluid with engine coolant in cold climates.

Fitment

Fits select 2006–2007 Dodge Ram 2500 and Dodge Ram 3500 applications. Verify vehicle configuration before ordering.

Fitments:
2006 Dodge Ram 2500 Laramie
2006 Dodge Ram 2500 SLT
2006 Dodge Ram 2500 Sport
2006 Dodge Ram 2500 ST
2006 Dodge Ram 2500 TRX4
2006 Dodge Ram 3500 Laramie
2006 Dodge Ram 3500 SLT
2006 Dodge Ram 3500 Sport
2006 Dodge Ram 3500 ST
2007 Dodge Ram 2500 Laramie
2007 Dodge Ram 2500 SLT
2007 Dodge Ram 2500 Sport
2007 Dodge Ram 2500 ST
2007 Dodge Ram 2500 TRX4
2007 Dodge Ram 3500 Laramie
2007 Dodge Ram 3500 SLT
2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 ST
2007 Dodge Ram 3500 TRX4

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