Wehrli Upper Coolant Pipe

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100517-IP

Overview

The Wehrli Upper Coolant Pipe is a premium 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 efficiently, this aluminum pipe offers a durable and reliable upgrade over the factory rubber hose. It is powder coated in Illusion Purple, providing both corrosion resistance and a distinctive appearance under the hood.

This part is ideal for Ram owners looking to enhance cooling system durability and aesthetics without compromising fitment or function. It is engineered to work seamlessly with the OEM RAM radiator, ensuring a direct bolt-on installation without modifications when used with factory cooling components.

Key Features

Engineered for durability and performance, the Wehrli Upper Coolant Pipe offers several key benefits:

• Constructed from high-quality aluminum for superior strength and heat resistance compared to OEM rubber hoses
• Powder coated in Illusion Purple for corrosion protection and a custom look
• Direct replacement for OEM upper radiator hose, maintaining factory fitment and function
• Compatible with 2013–2018 Ram 2500 and 3500 HD trucks equipped with the 6.7L Cummins diesel engine
• Replaces multiple MOPAR part numbers including 68166469AC, 68166469AA, 68166469AB, and others for easy cross-reference
• Improves cooling system reliability by eliminating rubber hose degradation issues
• Designed for use with OEM RAM radiator; aftermarket radiator fitment may vary

Construction & Design

The upper coolant pipe is precision-crafted from lightweight, corrosion-resistant aluminum, ensuring long-lasting durability under extreme engine bay conditions. The powder-coated finish not only protects against rust and environmental damage but also adds a vibrant Illusion Purple color that enhances engine bay aesthetics. The pipe’s design replicates the exact dimensions and angles of the OEM rubber hose, guaranteeing a perfect fit and seamless integration with the factory cooling system.

By replacing the flexible rubber hose with a rigid aluminum pipe, this component reduces the risk of coolant leaks caused by hose swelling, cracking, or collapsing over time. The robust construction also helps maintain consistent coolant flow, contributing to optimal engine temperature management.

Installation & Fitment

Installation is straightforward and requires no special tools or modifications when used with the OEM RAM radiator. The Wehrli Upper Coolant Pipe is a direct bolt-on replacement for the factory upper radiator hose on 2013–2018 Ram 2500 and 3500 trucks with the 6.7L Cummins engine. Simply remove the old rubber hose and install the aluminum pipe using the existing clamps and mounting points.

Note that fitment is guaranteed only with the OEM radiator; aftermarket radiators with differing inlet locations may cause installation challenges or require additional adjustments.

What's Included

• One Wehrli Upper Coolant Pipe in Illusion Purple powder coat finish
• Installation hardware is not included; reuse factory clamps and fittings

Ideal For

This upper coolant pipe is perfect for Ram 2500 and 3500 owners who want to upgrade their cooling system with a durable, long-lasting component that also adds a custom touch to their engine bay. It is especially suited for those who experience premature wear or failure of the OEM rubber upper radiator hose or who are building a reliable, high-performance diesel truck.

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.