Granatelli Motor Sports Billet Thermostat Housing

2018–2021 Jeep Grand Cherokee Trackhawk / 2021 Dodge Durango 6.2L HEMI

Part #: 431000

Overview

The Granatelli Motor Sports Billet Thermostat Housing is a premium cooling system upgrade engineered specifically for the 2018 to 2021 Jeep Grand Cherokee Trackhawk and the 2021 Dodge Durango Hellcat equipped with the 6.2L HEMI engine. Designed to replace the factory plastic thermostat housing, this billet aluminum component delivers superior durability and enhanced thermal management for high-performance and heavy-duty applications.

Ideal for enthusiasts who demand reliable engine temperature regulation during spirited driving, towing, or track use, this thermostat housing ensures consistent coolant flow and helps prevent overheating. Whether you are pushing your vehicle on the track or navigating tough road conditions, the Granatelli billet housing provides a robust and long-lasting solution that maintains optimal engine efficiency.

Key Features

Built with performance and reliability in mind, the Granatelli billet thermostat housing offers the following advantages:

• Precision CNC-machined from high-grade billet aluminum for exceptional strength and heat dissipation
• Direct bolt-on fitment for 2018–2021 Jeep Grand Cherokee Trackhawk and 2021 Dodge Durango Hellcat models, ensuring easy installation
• Enhanced sealing surfaces to prevent coolant leaks and maintain system integrity under pressure
• Optimized coolant flow design to improve engine temperature regulation and reduce hotspots
• Corrosion-resistant finish to withstand harsh under-hood environments and chemical exposure
• Compatible with factory thermostats, sensors, and cooling system components for seamless integration
• Ideal for high-performance driving, towing heavy loads, and extreme operating conditions

Construction & Design

This thermostat housing is crafted from premium billet aluminum, selected for its excellent thermal conductivity and superior strength-to-weight ratio compared to stock plastic housings. The CNC machining process ensures tight tolerances and a perfect fit, reducing the risk of leaks and enhancing durability.

The billet construction resists cracking, warping, and degradation caused by heat cycling and pressure fluctuations common in high-output engines. Additionally, the corrosion-resistant finish protects the housing from rust and chemical damage, extending its service life and maintaining reliable performance over time.

Designed to maintain full compatibility with OEM thermostats and sensors, this housing integrates effortlessly into the existing cooling system without requiring modifications.

Installation & Fitment

Installation is straightforward and requires no special tools or modifications. The Granatelli billet thermostat housing is a direct replacement for the factory unit on the specified Jeep Grand Cherokee Trackhawk and Dodge Durango Hellcat models. Standard hand tools are sufficient to remove the old housing and install the new billet component.

For best results, it is recommended to replace the thermostat gasket or O-ring during installation to ensure a proper seal and prevent leaks. This upgrade is suitable for professional mechanics as well as experienced enthusiasts comfortable with basic engine maintenance.

What's Included

• Granatelli Motor Sports Billet Thermostat Housing
• Sealing gasket or O-ring (if applicable)
• Installation instructions

Ideal For

This billet thermostat housing is perfect for Jeep Grand Cherokee Trackhawk and Dodge Durango Hellcat owners who require enhanced cooling system reliability and durability. It is especially suited for:

• Track enthusiasts and performance drivers seeking consistent engine temperature control
• Owners who tow heavy loads or operate their vehicles in extreme conditions
• Those upgrading or maintaining their cooling system with high-quality aftermarket components
• Anyone looking for a long-lasting, robust replacement for the factory plastic thermostat housing