CFR Performance Aluminum Mopar Hemi Gen 3 Thermostat Housing

2003–2025 Chrysler, Dodge, Jeep, Ram, and Chrysler Gen 3 HEMI Engines (5.7L, 6.1L, 6.4L)

Part #: HZ-6151-PBK

Overview

The CFR Performance Aluminum Mopar Hemi Gen 3 90° Water Neck Thermostat Housing is a precision-engineered cooling system upgrade designed for Dodge, Jeep, Ram, and Chrysler vehicles equipped with Gen 3 HEMI engines from 2003 through 2025. This thermostat housing features a unique 90-degree swivel water neck that rotates a full 360 degrees, providing unmatched flexibility for radiator hose routing. It is an excellent solution for enthusiasts performing custom engine swaps, working within tight engine bays, or seeking improved hose alignment without sacrificing durability or style.

Built to fit 5.7L, 6.1L, and 6.4L HEMI engines, this housing ensures a perfect fit and reliable cooling performance across a wide range of Mopar applications. Its sleek black powder-coated finish not only enhances corrosion resistance but also adds a stealthy, professional look to any performance build.

Key Features

This thermostat housing combines innovative design with premium materials to deliver superior functionality and durability:

• 90-degree swivel-style water neck with 360° rotation for optimal radiator hose positioning
• CNC-machined from lightweight, high-strength aluminum for enhanced durability and heat dissipation
• Black powder-coated finish offers corrosion resistance and a clean, stealthy appearance
• Compatible with 1-3/4" radiator hoses, fitting most OEM and aftermarket cooling setups
• Includes two mounting bolts for secure and straightforward installation
• Ideal for custom radiator configurations and Gen 3 HEMI engine swaps
• Lightweight design reduces unnecessary weight without compromising strength
• Designed to fit a broad range of Mopar vehicles with 5.7L, 6.1L, and 6.4L HEMI engines

Construction & Design

Crafted from precision CNC-machined aluminum, this thermostat housing offers superior strength and improved heat dissipation compared to standard cast or plastic housings. The durable black powder-coated finish enhances corrosion resistance and withstands the demanding conditions of high-performance engine bays. The 90-degree swivel neck is engineered for full 360-degree rotation, allowing custom radiator hose routing to accommodate tight spaces or unique build requirements. Designed to fit tightly with 1-3/4" radiator hoses, it ensures a leak-free seal and compatibility with a wide range of OEM and aftermarket cooling components. This robust construction makes it a reliable upgrade for both street and track applications.

Installation & Fitment

Installation is straightforward and requires no modifications, making this thermostat housing a convenient bolt-on upgrade for Mopar Gen 3 HEMI engines. The package includes two mounting bolts for secure attachment, ensuring a tight fit and dependable performance. Before installation, verify your radiator hose size and check for adequate clearance in your engine bay, especially in custom or swapped setups.

This thermostat housing fits the following vehicles equipped with Gen 3 HEMI engines:

• 2003–2025 Chrysler 300 (5.7L HEMI, 6.4L 392)
• 2003–2025 Chrysler 300C (5.7L HEMI, 6.4L 392)
• 2003–2025 Dodge Challenger (5.7L HEMI, 6.4L 392)
• 2003–2025 Dodge Charger (5.7L HEMI, 6.4L 392)
• 2003–2025 Dodge Dakota (5.7L HEMI)
• 2003–2025 Dodge Durango (5.7L HEMI, 6.4L 392)
• 2003–2025 Dodge Magnum (5.7L HEMI)
• 2003–2025 Dodge Ram (5.7L HEMI)
• 2003–2025 Jeep Grand Cherokee (5.7L HEMI, 6.1L SRT8, 6.4L SRT8)
• 2003–2025 Jeep Wagoneer (5.7L HEMI)
• 2005–2010 Chrysler 300C (6.1L SRT8)
• 2005–2010 Dodge Challenger (6.1L SRT8)
• 2005–2010 Dodge Charger (6.1L SRT8)
• 2005–2010 Dodge Magnum (6.1L SRT8)
• 2005–2010 Jeep Commander (5.7L HEMI)
• 2011–2025 Ram 2500 and 3500 (5.7L HEMI)

What's Included

• One black 90° swivel aluminum thermostat housing
• Two mounting bolts for secure installation

Ideal For

This thermostat housing is perfect for Mopar enthusiasts and professional builders who require flexible cooling system solutions. It is especially suited for:

• Custom engine swaps involving Gen 3 HEMI engines
• Tight engine bay applications where standard thermostat housings do not fit
• Performance builds seeking durable, lightweight cooling components
• Restorations or upgrades on Dodge, Jeep, Ram, and Chrysler vehicles with Gen III HEMI engines
• Anyone needing precise radiator hose alignment without compromising reliability

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.