Fleece Performance 03-07 Dodge 5.9L / 04.5-12 6.7L Cummins Coolant Bypass Kit (Manual Transmission)

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. 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. Recommended Cross Sell Skus - FPE-351-0304/FPE-CUMM-CP3-10MM-5.9/FPE-351-0407

• 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 is designed specifically for Dodge Ram trucks equipped with 5.9L and 6.7L Cummins engines from 2003 to 2007. This kit addresses a common issue where the rear cylinders on these engines experience inadequate coolant flow, leading to elevated temperatures that can cause severe damage such as blowouts of freeze plugs and coolant pressure failures. By adding a secondary thermostat that operates based on temperature rather than pressure, this bypass kit ensures more uniform coolant distribution across all cylinders, significantly reducing the risk of overheating and related failures.

Constructed with high-quality braided hoses and AN O-ring fittings, the kit guarantees a leak-free installation and long-lasting performance. The primary benefit is the maintenance of consistent engine temperatures, especially at the rear cylinders, which are most vulnerable to heat buildup. This improved thermal regulation enhances engine reliability and longevity by preventing excessive pressure build-up in the cooling system, thus avoiding costly repairs and downtime.

Designed for straightforward installation, the kit is compatible with various Dodge Ram models from 2006 to 2007, including both manual and automatic transmissions. Proper cooling system management is critical for heavy-duty diesel engines, and the Fleece Performance coolant bypass kit delivers an effective solution to mitigate overheating issues. Investing in this component promotes engine health, reduces maintenance costs, and ensures your vehicle maintains optimal performance under demanding conditions.

Features:

• Complete kit includes braided hose and AN O-ring fittings for a secure, leak-free installation

• Adds a secondary thermostat that operates based on temperature to prevent overheating

• Ensures consistent coolant temperature across all cylinders, especially at the rear

• Reduces coolant temperature at the rear cylinders to prevent damage

• Prevents damaging coolant pressure buildup that can lead to component failure

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
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