Wehrli WCFab Thermostat Housing

2019–2024 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100169-GRY

Overview

The Wehrli WCFab X Fleece Performance Engineering Thermostat Housing is a premium direct replacement upgrade designed specifically for the 2019–2024 Ram 2500 and 3500 equipped with the 6.7L Cummins diesel engine. This thermostat housing replaces the factory OEM coolant elbow with a more durable, functional, and visually appealing component. Ideal for diesel enthusiasts and professionals seeking enhanced cooling system customization and reliability, this housing integrates seamlessly with other WCFab cooling upgrades.

Featuring a built-in port with a plug, this thermostat housing allows for versatile coolant routing options, enabling users to tailor their cooling setup to meet specific performance or maintenance needs. Finished in a durable powder coat available in WCFab Grey, it complements other WCFab components such as upper coolant pipes, intake kits, and intercooler piping for a cohesive under-hood appearance.

Key Features

Engineered for durability and customization, the Wehrli WCFab thermostat housing offers several key benefits:

• Direct OEM replacement for 2019–2024 Ram 2500/3500 6.7L Cummins diesel engines
• Integrated coolant port with plug for customizable coolant routing
• Powder-coated finish in WCFab Grey for corrosion resistance and style
• Compatible with WCFab upper coolant pipes, intake kits, and intercooler piping
• Precision-machined for a perfect fit and reliable sealing
• Improves engine bay aesthetics by replacing the unsightly factory coolant elbow
• Constructed to withstand high temperatures and pressures typical of diesel cooling systems

Construction & Design

The thermostat housing is crafted from high-quality materials engineered to endure the demanding environment of diesel engine cooling systems. Its robust construction ensures resistance to heat, corrosion, and mechanical stress, providing long-lasting performance. The powder-coated finish not only enhances durability but also offers a sleek, professional look that complements other performance upgrades under the hood.

Designed with precision CNC machining, the housing guarantees an exact fit to the factory mounting points and coolant passages, ensuring leak-free operation and easy installation. The integrated coolant port adds versatility, allowing users to adapt their cooling system layout without compromising reliability.

Installation & Fitment

This thermostat housing is a direct bolt-on replacement for the factory coolant elbow on 2019–2024 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine. Installation requires no modifications and can be completed using standard hand tools. The included plug for the coolant port allows for straightforward customization of coolant lines based on individual setup requirements.

Its precise fitment ensures a hassle-free upgrade that improves both function and appearance, making it an excellent choice for enthusiasts upgrading their cooling system or replacing worn OEM components.

What's Included

• Wehrli WCFab X Fleece Thermostat Housing (Powder Coated Grey)
• Coolant port plug
• Installation hardware (if applicable)

Ideal For

This thermostat housing is ideal for Ram 2500 and 3500 owners with the 6.7L Cummins diesel engine who are looking to upgrade their cooling system with a durable, customizable, and visually appealing component. It suits diesel performance enthusiasts, professional mechanics, and anyone seeking to replace the factory coolant elbow with a higher-quality part that integrates seamlessly with other WCFab cooling and intake upgrades.

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.