Wehrli Aluminum Upper Coolant Pipe

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100517-CT

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 HD trucks equipped with the 6.7L Cummins diesel engine. Designed to connect the radiator inlet, this high-quality aluminum pipe offers enhanced durability and reliability compared to the factory rubber hose. It is powder coated in a vibrant candy teal finish, providing both corrosion resistance and a custom appearance under the hood.

This upgrade is ideal for Ram owners seeking a long-lasting cooling system component that withstands high temperatures and harsh operating conditions. It is engineered for use with the OEM RAM radiator to ensure proper fitment and optimal coolant flow.

Key Features

Engineered for durability and performance, the Wehrli Aluminum Upper Coolant Pipe offers the following benefits:

• Direct replacement for OEM rubber upper coolant hose on 2013–2018 Ram 2500/3500 6.7L Cummins
• Constructed from lightweight, corrosion-resistant aluminum for long service life
• Powder coated in candy teal for enhanced corrosion protection and distinctive styling
• Designed to fit OEM RAM radiators with factory inlet dimensions for seamless installation
• Eliminates common issues associated with rubber hoses such as swelling, cracking, and leaks
• Compatible with stock cooling system components to maintain factory cooling efficiency
• Replaces multiple MOPAR part numbers including 68166469AC, 68166469AA, and others
• Improves engine bay aesthetics with a clean, custom look

Construction & Design

The upper coolant pipe is precision-crafted from high-grade aluminum, chosen for its excellent thermal conductivity and resistance to corrosion. The aluminum construction ensures the pipe maintains its shape and integrity under extreme heat and pressure, unlike OEM rubber hoses that can degrade over time. The candy teal powder coat finish not only adds a vibrant color but also provides a durable protective layer against rust and environmental damage.

Each pipe is engineered to match the exact dimensions and inlet locations of the factory part, ensuring a perfect fit with OEM radiators. This attention to detail guarantees reliable coolant flow and prevents leaks, contributing to the overall health and longevity of the engine cooling system.

Installation & Fitment

Installation of the Wehrli Aluminum Upper Coolant Pipe is straightforward and designed to be a direct swap with the factory rubber hose. It fits 2013 through 2018 Ram 2500 and 3500 HD trucks equipped with the 6.7L Cummins diesel engine and OEM RAM radiators. No modifications are typically required when used with the factory radiator; however, fitment may vary with aftermarket radiators if the inlet location differs from OEM specifications.

Standard hand tools are sufficient for installation, and it is recommended to inspect all cooling system components during replacement to ensure optimal performance and leak-free operation.

What's Included

• One Wehrli Aluminum Upper Coolant Pipe, powder coated candy teal
• Installation instructions

Ideal For

This aluminum upper coolant pipe is perfect for Ram 2500 and 3500 owners who want to upgrade their cooling system with a more durable and visually appealing component. It is especially suited for enthusiasts who perform heavy-duty towing, off-road driving, or extended engine operation where OEM rubber hoses may fail prematurely. Additionally, those looking to maintain a clean and customized engine bay will appreciate the candy teal finish.

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.