Wehrli Upper Coolant Pipe

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100517-BB

Overview

The Wehrli Upper Coolant Pipe is a premium replacement part designed specifically for 2013 to 2018 Ram 2500 and 3500 heavy-duty trucks equipped with the 6.7L Cummins diesel engine. This aluminum upper coolant pipe replaces the factory rubber hose that connects to the radiator inlet, providing a durable and reliable upgrade for your cooling system. Ideal for diesel truck owners seeking enhanced longevity and a clean, custom look, this part is powder coated in Bengal Blue to add a touch of style under the hood.

Engineered to fit perfectly with OEM Ram radiators, this pipe ensures proper coolant flow and system integrity without the common issues associated with aging rubber hoses. It is a direct replacement for multiple Mopar part numbers, making it a trusted upgrade for maintaining or restoring your truck’s cooling performance.

Key Features

The Wehrli Upper Coolant Pipe offers several advantages over the original rubber hose, combining durability, fitment accuracy, and aesthetic appeal:

• Constructed from lightweight, corrosion-resistant aluminum for long-lasting performance
• Powder coated in Bengal Blue for enhanced visual appeal and protection against wear
• Direct OEM replacement for multiple Mopar part numbers including 68166469AC, 68166469AA, and others
• Designed specifically for 2013–2018 Ram 2500 and 3500 trucks with 6.7L Cummins diesel engines
• Improves cooling system reliability by eliminating the common failure points of rubber hoses
• Compatible with factory OEM Ram radiators to ensure proper fitment and coolant flow
• Powder coating resists chipping, fading, and corrosion in harsh engine bay environments
• Simple bolt-on installation with no modifications required when used with OEM radiator

Construction & Design

Manufactured from high-quality aluminum, the Wehrli Upper Coolant Pipe is engineered to withstand the demanding conditions of diesel truck cooling systems. Aluminum offers superior heat dissipation and resists the cracking and swelling issues commonly seen in rubber hoses over time. The pipe is precision-formed to match the exact dimensions of the OEM part, ensuring a seamless fit and reliable seal.

The Bengal Blue powder coat finish not only enhances corrosion resistance but also adds a distinctive, professional look to your engine bay. This coating is applied using a durable electrostatic process that provides excellent adhesion and long-term protection against environmental factors such as moisture, road salts, and engine heat.

Installation & Fitment

Installation of the Wehrli Upper Coolant Pipe is straightforward and designed to be a direct replacement for the factory rubber hose. It fits 2013–2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine and is intended for use with OEM Ram radiators. No cutting, trimming, or additional modifications are necessary when installed with a factory radiator.

It is important to note that aftermarket radiators with different inlet locations may cause fitment issues. Always verify radiator compatibility before installation to ensure proper fit and function.

What's Included

• One Wehrli Upper Coolant Pipe, powder coated Bengal Blue
• All necessary mounting hardware for installation
• Installation instructions

Ideal For

This upper coolant pipe is ideal for Ram 2500 and 3500 owners who want to upgrade their cooling system with a durable, long-lasting component. It is perfect for enthusiasts looking to replace aging or failing rubber hoses with a more reliable aluminum alternative that also enhances engine bay aesthetics. Additionally, it suits those maintaining OEM radiator setups who require a precise fit and dependable performance.

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.