CFR Performance Hemi Gen 3 90° Water Neck Thermostat Housing

2003–2025 Dodge / Jeep / Ram / Chrysler Gen 3 HEMI 5.7L, 6.1L, 6.4L

Part #: HZ-6151-R

Overview

The CFR Performance Aluminum Mopar Hemi Gen 3 90° Water Neck Thermostat Housing is a precision-engineered cooling system upgrade designed specifically for Mopar Gen III HEMI engines. This thermostat housing enhances coolant flow and provides maximum flexibility for radiator hose routing, making it an excellent choice for enthusiasts performing engine swaps, custom cooling system builds, or performance upgrades.

Crafted from high-quality aluminum with a raw finish, it offers a durable yet lightweight solution that can be left natural or customized with paint or powder coating. Compatible with a broad range of Dodge, Jeep, Ram, and Chrysler vehicles equipped with 5.7L, 6.1L, and 6.4L Gen 3 HEMI engines, this housing ensures a direct bolt-on fit for hassle-free installation and reliable operation.

Key Features

This thermostat housing combines innovative design and durable materials to meet the demands of high-performance Mopar applications:

• 90-degree swivel neck with full 360° adjustability for optimal radiator hose alignment
• Precision CNC-machined aluminum construction for strength and lightweight performance
• Raw, unpolished finish ideal for custom paint, powder coating, or natural aluminum look
• Fits standard 1-3/4" radiator hoses commonly used in Mopar Gen III HEMI cooling systems
• Direct bolt-on compatibility with 2003–2025 Mopar Gen 3 HEMI engines including 5.7L, 6.1L, and 6.4L variants
• Includes two mounting bolts for secure and straightforward installation
• Ideal for custom engine swaps and performance cooling setups requiring flexible hose routing
• Corrosion-resistant aluminum ensures long-lasting durability in demanding environments

Construction & Design

Manufactured from premium CNC-machined aluminum, this thermostat housing delivers exceptional durability while minimizing weight. The raw aluminum finish provides a versatile surface that can be left natural or customized to match your engine bay aesthetics. The 90-degree swivel neck design is engineered to rotate a full 360 degrees, allowing precise positioning of the radiator hose to accommodate custom setups or tight engine compartments.

This adaptability makes it an excellent choice for both OEM replacements and high-performance modifications, ensuring optimal coolant flow and reducing the need for additional hose modifications or adapters.

Installation & Fitment

Installation is straightforward with the included mounting bolts, ensuring a secure and direct bolt-on fit to Mopar Gen III HEMI engines. The housing is compatible with 1-3/4" radiator hoses, but it is recommended to verify hose sizing and radiator clearance before installation to ensure proper fitment.

Its design simplifies radiator hose routing, especially in custom builds or engine swaps, reducing installation time and complexity while maintaining reliable cooling system performance.

What's Included

• (1) Raw Aluminum 90° Swivel Thermostat Housing
• (2) Mounting Bolts

Ideal For

This thermostat housing is perfect for Mopar enthusiasts and professional builders who require a reliable, adjustable cooling system component for Gen III HEMI engines. Whether upgrading a factory cooling system, performing an engine swap, or building a custom performance vehicle, this housing provides the flexibility and durability needed for optimal coolant flow and hose routing.

It suits owners of Dodge Challenger, Charger, Dakota, Durango, Magnum, Ram 1500/2500/3500, Jeep Grand Cherokee, Wagoneer, and Chrysler 300/300C models equipped with 5.7L, 6.1L SRT8, and 6.4L 392 HEMI engines from 2003 through 2025.

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.