Wehrli WCFab Thermostat Housing

2019–2024 Ram 2500 / 3500 6.7L Diesel

Part #: WCF100169-GW

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 trucks equipped with the 6.7L Cummins diesel engine. This upgrade replaces the factory thermostat housing with a more durable and visually appealing component that enhances both engine cooling efficiency and under-hood aesthetics. Ideal for diesel enthusiasts and performance builders, this thermostat housing provides a clean, functional solution that integrates seamlessly with other WCFab cooling system upgrades.

Designed to improve coolant routing flexibility, the housing features a port with a plug, allowing users to customize their coolant lines to suit specific performance or maintenance needs. Finished in a gloss white powder coat, it complements other WCFab components such as upper coolant pipes, intake kits, and intercooler piping, creating a cohesive and professional engine bay appearance.

Key Features

This thermostat housing offers a range of benefits engineered to meet the demands of high-performance diesel applications:

• Direct OEM replacement for the 2019–2024 Ram 6.7L Cummins thermostat housing
• Integrated coolant port with removable plug for customizable coolant routing
• Durable powder-coated finish in gloss white for corrosion resistance and enhanced aesthetics
• Precision CNC-machined for exact fit and reliable sealing
• Compatible with WCFab upper coolant pipes, intake kits, and intercooler piping for a complete cooling system upgrade
• Improved coolant flow dynamics to support optimal engine temperature management
• Robust construction designed to withstand the rigors of heavy-duty diesel operation

Construction & Design

The Wehrli WCFab thermostat housing is crafted from high-quality aluminum, chosen for its excellent thermal conductivity and lightweight strength. The component is CNC-machined to ensure precise dimensions and a perfect fit with OEM mounting points, eliminating the need for modifications or adapters. The gloss white powder coat finish not only provides a striking visual upgrade but also protects the housing from corrosion and wear caused by exposure to coolant and engine bay elements.

Attention to detail in the design includes a strategically placed coolant port with a threaded plug, allowing users to tailor their coolant system setup for improved performance or maintenance convenience. This thoughtful engineering makes the housing a versatile choice for both stock and modified Cummins diesel engines.

Installation & Fitment

Installation of the Wehrli WCFab thermostat housing is straightforward and designed to be a direct bolt-on replacement for the factory part. No special tools or modifications are required, making it accessible for professional installers and experienced DIY enthusiasts alike. The housing fits perfectly on 2019–2024 Ram 2500 and 3500 models equipped with the 6.7L Cummins diesel engine, ensuring reliable sealing and coolant flow without leaks.

For best results, it is recommended to inspect and replace any associated gaskets or seals during installation. The customizable coolant port allows for flexible hose routing, which can be adapted to suit specific cooling system configurations or aftermarket upgrades.

What's Included

• Wehrli WCFab X Fleece Performance Engineering Thermostat Housing (Gloss White)
• Threaded plug for coolant port
• Mounting hardware as required for direct OEM replacement
• Installation instructions

Ideal For

This thermostat housing is perfect for Ram 2500 and 3500 owners looking to upgrade their cooling system with a reliable, high-quality component that enhances both function and appearance. It is especially suited for diesel performance enthusiasts, fleet operators, and anyone seeking improved coolant routing options and engine bay aesthetics. Pairing this housing with other WCFab cooling and intake upgrades creates a comprehensive solution for maintaining optimal engine temperatures under demanding conditions.

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.