Wehrli Upper Coolant Pipe

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100517-IBB

Overview

The Wehrli Upper Coolant Pipe is a premium aluminum replacement for the OEM rubber upper coolant hose on 2013 to 2018 Ram 2500 and 3500 HD trucks equipped with the 6.7L Cummins diesel engine. Designed to connect the radiator inlet with superior durability, this pipe offers a long-lasting solution that resists the wear and tear commonly associated with factory rubber hoses. Finished in a striking Illusion Blueberry powder coat, it not only enhances engine bay aesthetics but also provides corrosion resistance for extended service life.

This part is ideal for Ram owners seeking a reliable upgrade that maintains OEM fitment and performance while adding a custom touch. It is engineered specifically for use with the factory RAM radiator to ensure proper fitment and function.

Key Features

Engineered for durability and style, the Wehrli Upper Coolant Pipe offers the following key features:

• Direct replacement for OEM rubber upper coolant hose on 2013–2018 Ram 2500/3500 6.7L Cummins
• Constructed from lightweight, corrosion-resistant aluminum for enhanced longevity
• Powder coated in Illusion Blueberry for a vibrant, durable finish
• Maintains factory radiator inlet connection for seamless installation
• Resistant to heat, pressure, and chemical degradation compared to rubber hoses
• Improves engine bay appearance with a clean, custom look
• Replaces multiple MOPAR part numbers, ensuring compatibility with OEM components
• Designed to withstand demanding heavy-duty truck applications

Construction & Design

The upper coolant pipe is precision-crafted from high-grade aluminum, chosen for its excellent thermal conductivity and resistance to corrosion. This material choice ensures the pipe can handle the high temperatures and pressures typical of heavy-duty diesel cooling systems without swelling or cracking like rubber hoses. The powder coat finish not only adds a layer of protection against environmental factors but also provides a visually appealing, vibrant Illusion Blueberry color that stands out in the engine compartment.

Every detail of the pipe’s design is engineered to match OEM dimensions and connection points, guaranteeing a secure fit with the factory radiator inlet. This meticulous attention to fitment helps prevent leaks and ensures reliable coolant flow under all operating conditions.

Installation & Fitment

Installation is straightforward and designed to be a direct swap with the factory upper coolant hose on 2013–2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins engine. No modifications are typically required when used with the OEM RAM radiator. However, fitment with aftermarket radiators may vary if the inlet location differs from factory specifications, so compatibility should be verified before installation.

The pipe replaces several MOPAR part numbers, making it a reliable OEM-equivalent upgrade. Professional installation is recommended to ensure proper sealing and coolant system integrity.

What's Included

• One Wehrli Aluminum Upper Coolant Pipe, powder coated Illusion Blueberry

Ideal For

This upper coolant pipe is perfect for Ram 2500 and 3500 owners who want to upgrade from the factory rubber hose to a more durable, visually appealing aluminum component. It suits enthusiasts looking to enhance engine bay aesthetics while maintaining OEM-level fitment and reliability. It is also an excellent choice for those performing maintenance or repairs who prefer a long-lasting, high-quality replacement part designed specifically for heavy-duty diesel trucks.

Wehrli Custom Fabrication (WCFab) is a diesel performance and metal fabrication specialist building upgraded hard parts and engineered solutions for Duramax, Cummins, and Power Stroke trucks. Known for high-quality fabrication and truck-focused product development, WCFab supports everything from tow rigs to race-oriented diesel builds where durability, airflow, and heat management matter.