Dorman Engine Coolant Thermostat Housing for Dodge and Jeep — Direct-Fit Replacement, Thermally Stable

The Dorman 902-318 Engine Coolant Thermostat Housing is a direct-fit replacement housing engineered to match OE fit and endure extreme temperature swings for long-term service in specified Dodge and Jeep vehicles.

This replacement thermostat housing from Dorman is designed for owners and technicians who need a reliable, cost-effective substitute for the factory part. Manufactured to align with original mounting points and coolant passages, it restores the coolant system’s mechanical sealing and routing without expensive dealer sourcing. Before ordering, confirm your vehicle year, make, and trim in the garage tool to ensure compatibility with the extensive list of Dodge and Jeep models covered.

How does this housing restore my vehicle’s cooling system?

Replacing a cracked or leaking thermostat housing restores proper coolant flow and helps maintain engine temperature regulation. The Dorman housing is shaped to match the original coolant outlets and bolt pattern so it mates cleanly with the thermostat and hoses.

• Direct-fit design matches factory mounting points and coolant passages
• Restores secure hose connections and prevents coolant loss
• Compatible with factory thermostat and sensor locations where applicable

What materials and construction features help it resist leaks and cracks?

Dorman engineers this housing to withstand the thermal cycling and pressure changes common to engine cooling systems. The material selection and molded features reduce the chance of warpage and stress fractures compared with older, fatigued housings.

• Thermally stable construction tolerates rapid temperature changes
• Robust flange and bolt bosses minimize stress at mounting points
• Engineered sealing surfaces ensure reliable gasket compression

Which vehicles will this part fit and how can I confirm fitment?

This part serves many Dodge and Jeep models across 1990s through early 2000s model years where the original housing shares the same configuration. Because model variations exist, always verify fitment with your vehicle specifics before purchase.

• Fits multiple Dodge Ram, Dakota, Durango, B-series and W-series trucks across listed years
• Compatible with Jeep Grand Cherokee and Grand Wagoneer model years shown
• Use the garage tool to enter year, make, model, and trim to confirm correct fit

Is this an economical alternative to buying from the dealer?

Dorman positions this item as an aftermarket solution engineered for lasting performance while typically costing less than OEM dealer parts. It aims to balance affordability with quality to reduce ownership costs without sacrificing fit or function.

• Offers original-style fit and function at a lower price point than many dealer options
• Backed by Dorman’s aftermarket engineering and quality control
• Often available off-the-shelf for fast replacement turnaround

Who is this for? This Dorman 902-318 housing is intended for owners, DIY mechanics, and professional shops repairing cooling systems on compatible Dodge and Jeep vehicles from the specified years. It’s a practical choice when the original housing shows leakage, hairline cracks, warped sealing faces, or damaged hose outlets and a reliable, direct-fit replacement is required. For precise compatibility, use the vehicle lookup tool and inspect mating surfaces and thermostat location during installation.

Features:

• Ideal replacement — directly replaces original housing on listed years, makes, and models
• Durable construction — designed to withstand extreme temperature changes and resist cracking and leaking
• Cost-effective and reliable — offers OE-quality function at lower cost than dealer replacement
• Industry-leading design — engineered by an established aftermarket supplier of thermostat housings
• Ensure fit — input make, model, and trim into the garage tool to confirm correct application