Dorman 902-5040 Engine Coolant Thermostat Housing

Overview of Dorman Engine Coolant Thermostat Housing 902-5040

The Dorman 902-5040 engine coolant thermostat housing is designed for reliable cooling system performance in select Toyota vehicles. This metal thermostat housing is compatible with Toyota Celica, Cressida, and Supra models, providing a durable replacement option for maintaining proper engine temperature regulation.

• Constructed from durable metal material for long-lasting use
• Natural color finish with a 90-degree housing neck angle
• Includes a gasket and air vent (bleeder valve) for efficient coolant flow
• Features three mounting holes with 0.313-inch diameter for secure installation
• Outlet port diameter measures 1.313 inches to match OEM specifications
• Thermostat not included; designed to house existing thermostat
• Compatible with Toyota Celica, Cressida, and Supra models

Detailed Product Description

The Dorman 902-5040 engine coolant thermostat housing is engineered to meet the exact fitment requirements of Toyota Celica, Cressida, and Supra vehicles. Made from metal, this thermostat housing offers enhanced durability and resistance to heat and corrosion compared to plastic alternatives. The natural finish and 90-degree housing neck angle ensure proper coolant routing within the engine cooling system. It includes a gasket and an integrated air vent (bleeder valve) to help eliminate trapped air and maintain optimal coolant circulation. The housing features three mounting holes with a diameter of 0.313 inches, providing a secure and stable attachment point. While bolts are not included, the housing is designed to accommodate standard mounting hardware. The outlet port diameter of 1.313 inches matches OEM specifications, ensuring compatibility with existing coolant hoses.

Common Applications and Issues Addressed

• Replacement of cracked or leaking thermostat housing in Toyota Celica, Cressida, and Supra
• Resolving coolant leaks caused by worn or damaged housing gaskets
• Eliminating overheating issues due to faulty thermostat housing or air pockets
• Restoring proper coolant flow and engine temperature regulation
• Addressing corrosion or warping in original thermostat housing components

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Use the included gasket to prevent coolant leaks and ensure a tight seal
• Check mounting holes and hardware compatibility prior to installation
• Bleed the cooling system after installation to remove trapped air via the air vent valve
• Verify outlet port connections for secure hose attachment

Quality Assurance and Warranty

Dorman manufactures the 902-5040 thermostat housing to meet or exceed OEM standards for fit, form, and function. The metal construction provides enhanced durability and resistance to heat and corrosion. This part includes a gasket for proper sealing but does not include bolts or a thermostat. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in material and workmanship. For exact warranty terms, consult the product documentation or manufacturer.