Dorman 902-5148 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly for Toyota Vehicles

The Dorman 902-5148 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for Toyota 4Runner, FJ Cruiser, Hilux, Tacoma, and Tundra models. This assembly includes a thermostat and gasket to ensure proper sealing and efficient coolant flow.

• Durable black plastic construction for corrosion resistance
• Includes thermostat with 180°F opening temperature
• Comes with a gasket for secure sealing
• Three mounting holes for precise fitment
• Compatible with Toyota 4Runner, FJ Cruiser, Hilux, Tacoma, and Tundra

Product Features and Specifications

The Dorman 902-5148 thermostat housing assembly features a plastic housing with an inside diameter of 1.169 inches, designed to fit specific Toyota models. The flange dimensions are 3.187 inches in length, 3.214 inches in width, and 0.393 inches in thickness, providing a stable mounting surface. It includes one outlet port and three mounting holes spaced at 2.38, 2.6, and 2.344 inches center to center. The assembly does not include mounting hardware but comes with a gasket to ensure a leak-free installation. The thermostat included opens at 180 degrees Fahrenheit, helping regulate engine temperature effectively.

Application and Common Issues Addressed

• Prevents engine overheating by regulating coolant flow
• Replaces cracked or damaged thermostat housing
• Eliminates coolant leaks caused by worn seals or gaskets
• Restores proper engine temperature control in Toyota 4Runner, FJ Cruiser, Hilux, Tacoma, and Tundra
• Solves thermostat failure issues affecting engine performance

Installation Notes and Tips

Before installation, ensure the engine is cool to avoid injury. Remove the old thermostat housing carefully to prevent damage to surrounding components. Clean the mounting surface thoroughly to ensure proper gasket sealing. Although mounting hardware is not included, use the original bolts or appropriate replacements. Verify the thermostat orientation matches the original setup to maintain correct coolant flow. After installation, check for leaks and proper engine temperature regulation during operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit and function. The 902-5148 thermostat housing assembly undergoes quality checks to ensure durability and performance. This product includes a gasket and thermostat to provide a complete solution for engine cooling system repairs. Warranty coverage details can be obtained from the product documentation or manufacturer.