Wehrli Aluminum Upper Coolant Pipe

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100517-FB

Overview

The Wehrli Aluminum Upper Coolant Pipe is a direct replacement for the OEM rubber upper coolant hose on 2013 to 2018 Ram 2500 and 3500 heavy-duty trucks equipped with the 6.7L Cummins diesel engine. Designed to connect the radiator inlet efficiently, this high-quality aluminum pipe offers enhanced durability and reliability over the factory rubber hose. It is an excellent upgrade for diesel truck owners seeking improved cooling system longevity and a clean, custom look under the hood.

This upper coolant pipe is powder coated in flat black for corrosion resistance and aesthetic appeal, making it a perfect choice for those who want both function and style. It is engineered specifically for use with the OEM Ram radiator to ensure proper fitment and optimal coolant flow.

Key Features

Built to meet the demands of heavy-duty diesel applications, the Wehrli Aluminum Upper Coolant Pipe offers several key benefits:

• Direct replacement for OEM rubber upper coolant hose on 2013–2018 Ram 2500/3500 6.7L Cummins trucks
• Constructed from lightweight, durable aluminum for enhanced heat dissipation and strength
• Powder coated in flat black for superior corrosion resistance and a sleek appearance
• Designed to fit OEM Ram radiators precisely, ensuring leak-free connections
• Improves cooling system reliability by eliminating rubber hose degradation issues
• Compatible with factory coolant inlet locations to maintain proper coolant flow
• Replaces multiple MOPAR part numbers including 68166469AC, 68166469AA, 68166469AB, and others
• Ideal for diesel truck owners looking to upgrade cooling system components for durability and style

Construction & Design

The upper coolant pipe is crafted from high-grade aluminum, chosen for its excellent thermal conductivity and resistance to cracking or swelling that can occur with rubber hoses over time. The aluminum construction helps dissipate heat more effectively, contributing to a more stable engine operating temperature. The pipe is precision-engineered to match OEM dimensions, ensuring a seamless fit with the factory radiator inlet.

Its flat black powder coat finish not only protects against rust and corrosion but also provides a clean, professional look that complements the engine bay. This finish is durable enough to withstand harsh under-hood conditions, including exposure to heat, moisture, and road debris.

Installation & Fitment

Installation is straightforward and designed to be a direct swap with the factory rubber upper coolant hose. No modifications are necessary when used with the OEM Ram radiator, making it a hassle-free upgrade for DIY enthusiasts and professional installers alike. It is important to note that aftermarket radiators with different inlet locations may cause fitment issues, so this pipe is recommended for use with factory radiators only.

Ensure all clamps and connections are securely tightened to prevent leaks and maintain optimal coolant flow. Routine inspection after installation is advised to verify proper fit and function.

What's Included

• One Wehrli Aluminum Upper Coolant Pipe, powder coated flat black
• Installation instructions

Ideal For

This aluminum upper coolant pipe is ideal for Ram 2500 and 3500 owners with the 6.7L Cummins diesel engine who want to replace the factory rubber hose with a more durable, heat-resistant component. It suits those who prioritize cooling system reliability, longevity, and a clean engine bay appearance. Perfect for daily drivers, work trucks, and enthusiasts who demand quality OEM-fit aftermarket parts.

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.