CFR Performance Aluminum Mopar Hemi Gen 3 Straight Water Neck Thermostat Housing

2004–2021 Dodge / Jeep / Ram / Chrysler 5.7L, 6.1L, 6.4L HEMI Engines

Part #: HZ-6150-PBK

Overview

The CFR Performance Aluminum Mopar Hemi Gen 3 Straight Water Neck Thermostat Housing is a precision-engineered cooling system upgrade designed specifically for Mopar Gen III HEMI engines. This thermostat housing fits a wide range of Dodge, Jeep, Ram, and Chrysler vehicles equipped with 5.7L, 6.1L, and 6.4L HEMI engines from 2004 through 2021. Its straight water neck design simplifies hose routing, making it an excellent choice for custom engine swaps and performance builds where space and flexibility are critical.

Built to enhance both functionality and aesthetics, this thermostat housing offers a clean, black powder-coated finish that adds a professional look to your engine bay while providing superior corrosion resistance. Whether you’re upgrading your cooling system or fabricating a custom radiator setup, this housing delivers reliable performance and durability.

Key Features

Designed with the performance enthusiast and professional installer in mind, this thermostat housing offers the following key benefits:

• Compatible with Mopar Gen III HEMI 5.7L, 6.1L, and 6.4L engines from 2004 to 2021
• Fits Dodge, Jeep, Ram, and Chrysler platforms including popular models such as the Charger, Challenger, 300, Durango, Grand Cherokee, and Ram trucks
• Straight-style water neck for simplified and flexible radiator hose routing in tight engine bays
• CNC-machined from high-quality aluminum for strength and lightweight performance
• Black powder-coated finish resists corrosion and enhances engine bay appearance
• Designed to fit standard 1-3/4" radiator hoses for easy integration
• Includes two mounting bolts for straightforward, bolt-on installation
• Ideal for custom radiator setups, engine swaps, and performance cooling upgrades

Construction & Design

This thermostat housing is crafted from CNC-machined aluminum, ensuring precise dimensions and a perfect fit for Mopar Gen III HEMI engines. Aluminum construction offers excellent heat dissipation and durability, making it well-suited to withstand the high temperatures and vibrations typical of performance applications. The black powder-coated finish not only protects against corrosion but also provides a sleek, professional look that complements any engine bay.

The straight water neck design is engineered to simplify hose routing, especially in custom or tight engine compartments where traditional angled housings may cause clearance issues. This thoughtful design enhances installation flexibility without compromising cooling efficiency.

Installation & Fitment

Installation is straightforward with the included mounting bolts, allowing for a secure, bolt-on fitment. This housing is designed to directly replace the factory thermostat housing on Mopar Gen III HEMI engines, making it an ideal upgrade or replacement part. However, it is important to verify radiator hose size and thermostat clearance before installation, especially in custom or swap applications where modifications may be necessary.

Compatible vehicles include a broad range of Mopar models equipped with 5.7L, 6.1L, and 6.4L HEMI engines, such as the Chrysler 300 and 300C, Dodge Challenger, Charger, Dakota, Durango, Magnum, Ram 1500/2500/3500, Jeep Commander, Grand Cherokee, Wagoneer, and Wrangler.

What's Included

• (1) Black Aluminum Straight Thermostat Housing
• (2) Mounting Bolts

Ideal For

• Performance enthusiasts upgrading cooling systems on Mopar Gen III HEMI engines
• Custom engine swap projects requiring flexible hose routing solutions
• Restorations and repairs needing a durable, corrosion-resistant thermostat housing
• Anyone seeking a clean, professional engine bay appearance with a black powder-coated finish

CFR Performance is a major automotive supplier and distributor of car and truck accessories. We are a part of a family owned and operated tradition of automotive Excellency, which dates back to the late 1970's. Since then we have put together some new and innovative products for our customers. At CFR, we use our long tradition of wisdom in automotive business and customer satisfaction to provide you with superior quality and cost effective products.