MITZONE Upgrade Aluminum Thermostat Housing Assembly

MITZONE's upgraded aluminum thermostat housing assembly replaces worn coolant outlets on select Dodge Durango, Grand Cherokee and Wrangler JK models for a reliable cooling-system connection.

If your vehicle shows coolant leaks, overheating symptoms, or a cracked plastic outlet, this MITZONE replacement housing assembly offers a durable aluminum option built to the OE fitment specifications. The kit includes the thermostat, gasket, and mounting screw so you can swap the entire coolant outlet in one job. It’s designed as a direct-fit replacement for part numbers 902-852, 5184651AG and 5184651AH and targets model years commonly affected by brittle plastic housings.

How does this assembly improve durability compared with the factory part?

The housing is machined from aluminum rather than molded plastic, which resists cracking from heat cycling and road vibration. Aluminum also dissipates heat differently and maintains clamp integrity over time, reducing the chance of coolant seepage at hose connections.

• Solid aluminum construction for better long-term strength
• Factory-style mounting points for secure fitment
• Includes a properly sized gasket to prevent leaks

Will this fit my Dodge Durango, Grand Cherokee, or Wrangler JK?

MITZONE specifies compatibility with particular model-year ranges where the OEM coolant outlet shares the same mounting pattern and thermostat size. Verify your vehicle year and engine application before purchase to ensure a direct replacement fit.

• Compatible vehicles: Dodge Durango (2011–2015)
• Compatible vehicles: Jeep Grand Cherokee (2011–2015)
• Compatible vehicles: Jeep Wrangler JK (2012–2017) and 2018 Wrangler JK

What parts come in the kit and what thermostat temperature does it use?

The package is a complete outlet replacement containing the housing, a thermostat calibrated for typical factory operation, a gasket, and a sturdy mounting screw for reinstallation. The installed thermostat opens at 203°F (95°C), matching many OEM thermal specifications for these engines.

• Included: aluminum thermostat housing
• Included: thermostat rated to open at 203°F / 95°C
• Included: gasket and mounting screw for a single replacement

How easy is installation and what should I prepare?

Installation is a moderate DIY task for anyone comfortable draining part of the cooling system and removing accessory components that block access. Because the assembly is a direct-fit replacement, no modifications are necessary, but take time to clean mating surfaces and refill coolant correctly.

• Tool basics: ratchet set, torque wrench, coolant catch pan
• Procedure: drain coolant, remove old housing, clean, install new gasket and housing
• Tip: inspect hoses and clamps while replacing the housing for preventative maintenance

Who is this for: This MITZONE aluminum thermostat housing assembly is aimed at owners and professional technicians who need a robust replacement for aging or failed coolant outlets on the supported Dodge and Jeep models. It suits drivers who prefer a longer-lasting metal housing over the original plastic piece, shops replacing multiple components at once, and DIYers performing scheduled or corrective coolant-system maintenance. If you’re unsure about fitment or have questions, MITZONE offers customer support to confirm compatibility before you install.