Wehrli WCFab Thermostat Housing

2019–2024 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100169-GB

Overview

The Wehrli WCFab X Fleece Performance Engineering Thermostat Housing is a premium direct replacement designed specifically for the 2019–2024 Ram 2500 and 3500 equipped with the 6.7L Cummins diesel engine. This thermostat housing upgrade replaces the factory OEM coolant elbow with a more functional and visually appealing component. Ideal for diesel enthusiasts and performance builders, it offers enhanced coolant routing flexibility and a sleek gloss black finish that complements other WCFab upgrades.

Whether you are upgrading your cooling system for improved reliability or simply seeking a cleaner engine bay appearance, this thermostat housing provides a robust solution that integrates seamlessly with your Ram’s existing setup.

Key Features

Engineered for durability and customization, the Wehrli WCFab thermostat housing includes several key features that set it apart from the stock component:

• Direct OEM replacement for a perfect fit on 2019–2024 Ram 2500 and 3500 6.7L Cummins engines
• Integrated coolant port with plug, allowing for customizable coolant routing options
• Powder-coated gloss black finish for corrosion resistance and a refined appearance
• Compatible with WCFab upper coolant pipes, intake kits, and intercooler piping for a cohesive upgrade package
• Precision-machined for reliable sealing and leak-free operation
• Improved coolant flow dynamics to support optimal engine temperature management
• Heavy-duty construction designed to withstand high under-hood temperatures and pressures

Construction & Design

The thermostat housing is crafted from high-quality materials selected for strength and thermal resistance. Its robust construction ensures long-lasting durability under the demanding conditions of diesel engine operation. The powder-coated gloss black finish not only enhances corrosion protection but also provides a sleek, professional look that complements other performance components.

Designed with precision CNC machining, the housing guarantees a perfect fit and reliable sealing against coolant leaks. The inclusion of a customizable coolant port with a removable plug offers flexibility for advanced coolant system setups, making it an excellent choice for enthusiasts who want to tailor their cooling system to specific performance needs.

Installation & Fitment

Installation is straightforward as this thermostat housing is a direct bolt-on replacement for the OEM coolant elbow on 2019–2024 Ram 2500 and 3500 trucks with the 6.7L Cummins engine. No modifications or special tools are required, making it accessible for both professional installers and experienced DIYers. The included coolant port plug can be removed or installed depending on your coolant routing preferences.

What's Included

• Wehrli WCFab X Fleece Thermostat Housing (Gloss Black)
• Coolant port plug for customization
• Installation hardware as required for direct replacement

Ideal For

This thermostat housing is ideal for Ram 2500 and 3500 owners who want to upgrade their cooling system with a durable, customizable, and visually appealing component. It is especially suited for diesel performance enthusiasts, truck builders, and anyone looking to complement other WCFab cooling and intake upgrades. Whether for daily driving, towing, or off-road applications, this housing enhances both function and style under the hood.

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.