CFR Performance Hemi Gen 3 Straight Water Neck Thermostat Housing

2004–2021 Chrysler 300, Dodge Challenger, Charger, Durango, Jeep Grand Cherokee, Ram 1500/2500/3500 5.7L, 6.1L, 6.4L HEMI Engines

Part #: HZ-6150-R

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 high-quality thermostat housing fits a broad range of Dodge, Jeep, Ram, and Chrysler vehicles equipped with 5.7L, 6.1L, and 6.4L engines from 2004 through 2021. Its straight water neck design simplifies hose routing, making it ideal for tight engine bays and custom radiator setups.

Built for enthusiasts and professional builders alike, this thermostat housing offers enhanced durability and corrosion resistance compared to factory cast iron or plastic units. It combines functional improvements with a polished aluminum finish that elevates the appearance of any engine compartment, making it perfect for performance builds, custom swaps, restorations, and show vehicles.

Key Features

Engineered for reliability and performance, the CFR Performance thermostat housing includes these standout features:

• Compatible with Mopar Gen III HEMI 5.7L, 6.1L, and 6.4L engines from 2004 to 2021
• Fits popular models including Chrysler 300, Dodge Charger, Challenger, Durango, Jeep Grand Cherokee, Wrangler, and Ram 1500/2500/3500
• Straight-style water neck design for clean, simplified hose routing and improved fitment in tight engine compartments
• CNC-machined from high-quality polished aluminum for superior corrosion resistance and a show-quality finish
• Designed to accommodate 1-3/4" radiator hoses, ensuring compatibility with common cooling system setups
• Includes two mounting bolts for straightforward, bolt-on installation
• Ideal for performance builds, custom swaps, and engine bay upgrades requiring enhanced hose routing flexibility

Construction & Design

This thermostat housing is crafted from premium-grade aluminum using CNC machining to guarantee precise dimensions and a flawless polished finish. Aluminum’s excellent heat dissipation properties help maintain optimal engine temperatures while resisting corrosion far better than traditional cast iron or plastic housings. The straight water neck reduces hose bends and kinks, promoting smooth coolant flow and simplifying installation in tight or custom engine bays.

The polished surface not only improves durability but also adds a refined, professional look to your engine compartment. This makes the housing an excellent upgrade for show cars and performance vehicles where both function and aesthetics matter.

Installation & Fitment

Installation is straightforward with the included mounting bolts, allowing for a direct bolt-on replacement of the factory thermostat housing. This product fits a wide range of Mopar Gen III HEMI engines from 2004 to 2021, including the 5.7L, 6.1L, and 6.4L variants found in Chrysler 300, Dodge Charger, Challenger, Durango, Jeep Grand Cherokee, Wrangler, and Ram 1500/2500/3500 models.

Before installation, verify your radiator hose size and thermostat location to ensure compatibility, especially in custom swap or modified cooling system applications. The straight water neck design is particularly beneficial for custom radiator setups where hose routing flexibility is critical.

What's Included

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

Ideal For

This thermostat housing is perfect for Mopar enthusiasts and professional builders who require a durable, high-quality cooling system component that offers improved hose routing and a polished appearance. It is especially suited for:

• Performance engine builds and upgrades
• Custom HEMI engine swaps and radiator setups
• Restoration projects seeking OEM-plus quality and aesthetics
• Show vehicles where engine bay appearance matters
• Owners looking to replace factory housings with a more durable, corrosion-resistant option

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.