Wehrli Aluminum Coolant Tank Kit

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100628-GM

Overview

The Wehrli Aluminum Coolant Tank Kit is a premium replacement for the factory coolant reservoir on 2013–2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine. Designed to mount directly in the OEM coolant tank location, this kit offers a durable and visually appealing upgrade over the standard clear plastic reservoir. It is ideal for diesel enthusiasts looking to enhance their engine bay’s appearance while maintaining reliable cooling system performance.

With its custom powder-coated gun metal finish and integrated sight glass, this coolant tank not only improves aesthetics but also provides practical functionality. The kit is engineered to fit stock trucks without requiring any modifications, making it a straightforward upgrade for owners seeking both style and substance.

Key Features

This coolant tank kit combines quality materials and thoughtful design to deliver a superior cooling reservoir solution:

• Fabricated from lightweight, corrosion-resistant aluminum for enhanced durability
• Custom powder-coated gun metal finish for a sleek, modern engine bay look
• Clear sight glass integrated into the tank for easy coolant level monitoring
• Includes a black anodized CNC machined billet aluminum cap for a precision fit and refined appearance
• Mounts using OEM mounting points—no drilling or modifications required
• Compatible with stock and drop-in turbochargers, as well as larger aftermarket and compound turbo setups
• Comes complete with mounting hardware, overflow hose, and low coolant sensor for a plug-and-play installation
• Designed to provide additional clearance in the engine bay for enhanced turbocharger compatibility

Construction & Design

The coolant tank is expertly fabricated from high-grade aluminum, chosen for its strength-to-weight ratio and resistance to corrosion commonly caused by coolant exposure. The powder-coated finish not only adds a protective layer but also delivers a refined gun metal color that complements the rugged aesthetic of diesel trucks.

The inclusion of a sight glass allows for quick visual checks of coolant levels without the need to open the cap, reducing the risk of spills or contamination. The billet aluminum cap is CNC machined to exacting tolerances, ensuring a secure seal and long-lasting durability under demanding conditions.

Installation & Fitment

Installation is straightforward and designed to be completed with basic hand tools. The tank mounts directly to the OEM coolant tank location using existing mounting points, eliminating the need for any drilling or permanent modifications. This ensures a clean, factory-like fitment and preserves the integrity of the vehicle.

The kit is engineered to fit all stock 2013–2018 Ram 2500 and 3500 trucks with the 6.7L Cummins diesel engine. It is fully compatible with stock turbochargers and drop-in replacements, while also providing the necessary clearance for larger aftermarket or compound turbocharger setups.

What's Included

• Fabricated aluminum coolant tank with powder-coated gun metal finish
• Black anodized CNC machined billet aluminum cap
• Mounting hardware for OEM installation
• Overflow hose
• Low coolant sensor

Ideal For

This coolant tank kit is perfect for Ram 2500 and 3500 owners who want to upgrade their engine bay with a durable, high-quality coolant reservoir. It is especially suited for diesel enthusiasts who run stock or upgraded turbochargers and require additional clearance and reliability. Whether you are restoring your truck’s appearance or preparing for performance modifications, this kit offers a functional and stylish solution.

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.