Dorman Engine Coolant Thermostat Housing replacement for Dodge & Jeep 902-306 — direct-fit, thermal-cycle resistant

The Dorman 902-306 Engine Coolant Thermostat Housing is a direct-fit replacement housing engineered to match OEM fit and withstand extreme temperature cycles for long-lasting, leak-resistant service.

This replacement thermostat housing from Dorman is designed to restore proper coolant flow and sealing where the original housing has cracked or failed. It fits specific Dodge and Jeep models across the 1990s and early 2000s — including Dakota, Cherokee, Comanche, Grand Cherokee, TJ and Wrangler — and is made to resist the heat and pressure challenges of under-hood operation. Use your vehicle’s make, model and trim in the garage lookup to confirm compatibility before ordering.

How does this housing match the original part?

The 902-306 is engineered to replicate the stock housing’s mounting points, coolant passages and sealing surfaces so it installs like the factory unit. That reduces modification needs and helps retain original hose routing and thermostat placement.

• Direct-fit design for specified years and models
• OEM-style mounting bosses and bolt locations
• Compatible with factory thermostat and hoses

Will it resist cracking and leaking under heat stress?

Dorman designs replacement housings to tolerate repeated hot-cold cycles common in engine cooling systems. The 902-306 uses materials and construction meant to minimize thermal fatigue and to reduce the chance of stress cracks or coolant leaks compared with failed units.

• Durable construction for thermal cycling resistance
• Precision sealing surfaces to prevent coolant seepage
• Engineered to match pressure and temperature demands

Is installation straightforward for a DIY mechanic?

Yes — installation is typically straightforward for anyone comfortable with basic cooling-system work. Removing the old housing, replacing the gasket or O-ring, and reinstalling hoses and bolts follows standard steps; always drain coolant safely and torque fasteners to specification.

• Installs using factory mounting points and thermostat
• Requires basic hand tools and coolant drain/refill
• Follow vehicle torque specs and coolant refill procedure

Which vehicles and years does this part fit?

The 902-306 fits a range of Dodge and Jeep vehicles from the early 1990s through the mid-2000s. Confirm fitment by entering your make, model and trim in the fitment/garage tool before purchase to ensure exact compatibility.

• Dodge Dakota: 1997–2002
• Jeep Cherokee: 1991–2001
• Jeep Comanche: 1991–1992
• Jeep Grand Cherokee: 1993–2004; Jeep TJ/Wrangler: select 1991–2006 years

Who is this for: The Dorman 902-306 is aimed at vehicle owners and independent mechanics who need a dependable, cost-effective replacement for a failed thermostat housing on compatible Dodge or Jeep models. It’s suitable for DIY repairs or for shops seeking an aftermarket alternative to dealer parts that preserves OEM fit and function while reducing replacement cost. Always verify fitment for your specific year and trim before installation and follow safe cooling-system service procedures when working under the hood.