Wehrli Aluminum Upper Coolant Pipe

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100517-GB

Overview

The Wehrli Aluminum Upper Coolant Pipe is a direct replacement for the OEM rubber upper coolant hose on 2013–2018 Ram 2500 and 3500 heavy-duty trucks equipped with the 6.7L Cummins diesel engine. Designed to improve durability and reliability, this aluminum pipe serves as the radiator inlet coolant line, offering a long-lasting alternative to the factory rubber hose that can degrade over time. Finished in a gloss black powder coat, it not only enhances engine bay aesthetics but also provides superior resistance to heat and corrosion.

This upgrade is ideal for Ram owners seeking a robust cooling system component that maintains OEM fitment and function while adding a touch of performance-grade quality. It is engineered for use with the original equipment manufacturer (OEM) Ram radiator to ensure proper fit and optimal coolant flow.

Key Features

Engineered for durability and seamless integration, 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 diesel trucks
• Constructed from high-quality aluminum for enhanced strength and heat resistance
• Gloss black powder-coated finish for corrosion protection and a sleek appearance
• Maintains OEM radiator inlet dimensions for guaranteed fitment with factory radiators
• Replaces multiple MOPAR part numbers including 68166469AC, 68166469AA, 68166469AB, and others
• Improves cooling system reliability by eliminating rubber hose degradation issues
• Lightweight design reduces unnecessary engine bay weight compared to OEM rubber hose
• Precision engineered to ensure leak-free coolant flow and long-term durability

Construction & Design

The upper coolant pipe is crafted from premium-grade aluminum, chosen for its excellent thermal conductivity and resistance to cracking or swelling under high temperatures and pressure. The aluminum construction ensures a rigid, stable coolant path that withstands the harsh operating conditions of heavy-duty diesel engines. The gloss black powder coat finish not only protects the pipe from corrosion and environmental damage but also provides a clean, professional look that complements the engine bay.

Designed with exact OEM dimensions, this pipe fits perfectly with the original Ram radiator inlet, ensuring a hassle-free installation without the need for modifications or adapters. The robust build quality reflects Wehrli’s commitment to producing reliable, high-performance cooling system components.

Installation & Fitment

Installation is straightforward, as this aluminum upper coolant pipe is a direct bolt-on replacement for the factory rubber hose on 2013–2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine. It is compatible with OEM Ram radiators; however, fitment may vary if aftermarket radiators with different inlet locations are used. No special tools or modifications are required, making it an ideal upgrade for both professional mechanics and experienced DIY enthusiasts.

What's Included

• One Wehrli Aluminum Upper Coolant Pipe, gloss black powder coated
• All necessary mounting hardware for installation
• Installation instructions

Ideal For

This product is perfect for Ram 2500 and 3500 owners who want to replace the factory rubber upper coolant hose with a more durable, long-lasting aluminum alternative. It is especially suited for those who frequently tow, haul heavy loads, or operate their trucks in demanding conditions where cooling system reliability is critical. Additionally, enthusiasts looking to enhance the engine bay appearance with a clean, professional upgrade will appreciate the gloss black finish and quality construction.

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.