Dorman 902-3018 Engine Coolant Thermostat Housing

Reliable Engine Coolant Thermostat Housing for Jeep Vehicles

The Dorman 902-3018 engine coolant thermostat housing is designed to provide a durable and precise fit for select Jeep models. Crafted from metal with a natural finish, this thermostat housing ensures efficient coolant flow and reliable engine temperature regulation.

• Constructed from durable metal material for long-lasting performance
• Includes a gasket for a secure, leak-free seal
• Features a 1.5-inch outlet port diameter for proper coolant flow
• Equipped with an air vent (bleeder valve) to prevent air pockets
• Designed with two mounting holes, each 0.313 inches in diameter
• Housing neck angle set at 60 degrees for precise fitment
• Compatible with Jeep Cherokee, CJ5, CJ7, Grand Wagoneer, J10, J20, and Wagoneer models

Durable Construction and Precise Fitment Details

This Dorman engine coolant thermostat housing (part number 902-3018) is engineered to meet the specifications required by Jeep vehicles including the Cherokee, CJ5, CJ7, Grand Wagoneer, J10, J20, and Wagoneer. The metal construction offers resistance to heat and corrosion, while the natural color finish maintains the original equipment appearance. The included gasket ensures a tight seal to prevent coolant leaks, and the built-in air vent (bleeder valve) helps eliminate trapped air in the cooling system, promoting optimal engine temperature control.

Compatible Jeep Models and Applications

This thermostat housing is specifically compatible with the following Jeep models:

• Jeep Cherokee
• Jeep CJ5 and CJ7
• Jeep Grand Wagoneer
• Jeep J10 and J20
• Jeep Wagoneer

It is designed to replace the original thermostat housing and works with existing thermostat units (thermostat not included).

Common Issues Addressed by This Thermostat Housing

• Coolant leaks caused by cracked or damaged thermostat housing
• Overheating due to improper coolant flow
• Air pockets in the cooling system affecting temperature regulation
• Loose or damaged mounting points leading to coolant loss
• Corrosion or wear compromising the housing integrity

Installation Notes and Tips

When installing the Dorman 902-3018 thermostat housing, ensure the gasket is properly seated to prevent leaks. The housing features two mounting holes with a diameter of 0.313 inches, so use appropriate bolts (not included) matching the original specifications. The 60-degree housing neck angle must align correctly with the coolant hoses for proper fitment. Bleed the cooling system after installation to remove any trapped air through the built-in air vent valve.

Quality Assurance and Warranty Information

Dorman manufactures this thermostat housing to meet or exceed OEM standards for fit, form, and function. The metal construction and included gasket contribute to reliable, leak-free operation. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in material and workmanship.