WEHRLI CUSTOM FAB WCF100678 UPPER COOLANT PIPE 2003-2009 CUMMINS 5.9L / 6.7L

Product Description

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The WEHRLI CUSTOM FAB WCF100678 UPPER COOLANT PIPE is a reliability upgrade for 2003-2009 Dodge Ram Cummins trucks designed to replace the restrictive and failure-prone factory coolant tube with a durable fabricated aluminum solution. Built with high-quality aluminum construction and precision bends, this pipe improves coolant flow while providing long-term durability in high-heat engine bay environments.

Factory coolant tubes can corrode, fatigue, or become restrictive over time. The Wehrli Custom Fab upgrade replaces the stock component with a high-strength aluminum coolant pipe that improves reliability while also adding a cleaner, performance-focused appearance to your engine bay. This makes it an excellent upgrade for stock trucks, towing builds, and performance Cummins applications.

Key Features:

• Heavy-duty fabricated aluminum coolant pipe
• Improves durability compared to factory coolant tubing
• Designed for proper coolant flow and engine cooling efficiency
• Corrosion resistant aluminum construction
• Precision fit for easy installation
• Great upgrade for stock or modified Cummins trucks
• Made in the USA

Fitment:

• 2003 Dodge Ram 2500 / 3500 – 5.9L Cummins
• 2004 Dodge Ram 2500 / 3500 – 5.9L Cummins
• 2005 Dodge Ram 2500 / 3500 – 5.9L Cummins
• 2006 Dodge Ram 2500 / 3500 – 5.9L Cummins
• 2007 Dodge Ram 2500 / 3500 – 5.9L Cummins
• 2007.5 Dodge Ram 2500 / 3500 – 6.7L Cummins
• 2008 Dodge Ram 2500 / 3500 – 6.7L Cummins
• 2009 Dodge Ram 2500 / 3500 – 6.7L Cummins

What's Included:

• Wehrli Custom Fab aluminum upper coolant pipe
• Installation hardware (where applicable)

FAQ

What problem does the WCF100678 coolant pipe solve?

The factory coolant pipe can become restrictive or degrade over time. The Wehrli upgrade provides stronger aluminum construction and improved durability.

Will this fit both 5.9L and 6.7L Cummins engines?

Yes. This coolant pipe is designed to fit 2003-2009 Dodge Ram Cummins trucks including both 5.9L and early 6.7L engines.

Is this a direct bolt-on replacement?

Yes. The WCF100678 is engineered for direct installation in the factory location and works with stock cooling system components.

Does this improve cooling performance?

While primarily designed for durability and reliability, the smooth aluminum design can help maintain consistent coolant flow through the engine.