Wehrli WCFab Thermostat Housing

2019–2024 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100169-BR

Overview

The Wehrli WCFab X Fleece Performance Engineering Thermostat Housing is a premium upgrade designed specifically for the 2019–2024 Ram 2500 and 3500 equipped with the 6.7L Cummins diesel engine. This direct replacement part enhances the engine bay’s appearance by replacing the factory thermostat housing with a sleek, durable component finished in vibrant Bengal Red powder coat. Ideal for enthusiasts seeking both style and functionality, this thermostat housing also offers improved coolant routing flexibility thanks to its integrated port with a removable plug.

Whether you are upgrading your cooling system or aiming to complement other WCFab components such as upper coolant pipes, intake kits, or intercooler piping, this thermostat housing provides a seamless fit and a refined look that stands out under the hood.

Key Features

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

• Direct OEM replacement for a perfect fit on 2019–2024 Ram 2500 and 3500 6.7L Cummins engines
• Integrated coolant port with plug for customizable coolant routing options
• High-quality powder coat finish in Bengal Red for corrosion resistance and enhanced aesthetics
• Compatible with other WCFab cooling system upgrades for a cohesive engine bay setup
• Precision CNC-machined for reliable sealing and long-lasting performance
• Improves engine bay appearance by replacing the stock thermostat housing’s utilitarian look
• Designed to withstand the rigors of diesel engine heat and pressure

Construction & Design

The thermostat housing is crafted from premium-grade aluminum, chosen for its excellent thermal conductivity and lightweight strength. CNC machining ensures tight tolerances and a precise fit, minimizing the risk of leaks and improving overall reliability. The Bengal Red powder coat finish not only adds a striking visual element but also provides robust protection against corrosion, road debris, and harsh underhood conditions. The integrated coolant port with a removable plug allows for versatile coolant line configurations, making it easier to tailor your cooling setup to your specific performance or maintenance needs.

Installation & Fitment

Installation is straightforward as this thermostat housing is a direct bolt-on replacement for the factory unit on 2019–2024 Ram 2500 and 3500 trucks with the 6.7L Cummins diesel engine. No modifications or special tools are required, making it suitable for both professional installers and experienced DIY enthusiasts. The included coolant port plug can be removed or installed depending on your desired coolant routing configuration. Always ensure proper torque specifications and gasket sealing during installation to maintain optimal cooling system performance.

What's Included

• Wehrli WCFab X Fleece Thermostat Housing in Bengal Red powder coat
• Coolant port plug for customizable routing
• Installation hardware (if applicable)
• Detailed installation instructions

Ideal For

This thermostat housing is perfect for Ram 2500 and 3500 owners who want to upgrade their cooling system with a high-quality, visually appealing component. It is especially suited for enthusiasts building performance diesel trucks, those upgrading their cooling and intake systems, or anyone looking to replace the OEM thermostat housing with a more durable and customizable option. Its compatibility with other WCFab cooling components makes it an excellent choice for a comprehensive engine bay upgrade.

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.