Dorman 902-903 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly for Ford LS and Thunderbird

The Dorman 902-903 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for Ford and Lincoln vehicles, specifically the LS and Thunderbird models. This assembly includes a thermostat calibrated to open at 208°F, ensuring efficient coolant flow and engine performance.

Key Features of the Dorman 902-903 Thermostat Housing Assembly

• Durable black plastic construction for corrosion resistance
• Includes thermostat, water outlet, cap, and seals for a complete replacement
• Thermostat opening temperature set at 208 degrees Fahrenheit
• Four mounting holes with precise bolt hole spacing for secure installation
• Flange dimensions: 3.65" length, 3.179" width, and 0.529" thickness
• Inside diameter of 1.41 inches for proper coolant flow
• Gasket included to ensure a tight seal and prevent leaks
• Single outlet port design compatible with specified vehicle models

Detailed Description of the Dorman 902-903 Assembly

This engine coolant thermostat housing assembly is engineered from high-quality plastic to resist heat and corrosion, extending the service life of your cooling system components. The included thermostat opens at 208°F, which is critical for maintaining the engine’s ideal operating temperature. The assembly features four mounting holes with exact bolt hole center measurements (2.860 in, 2.215 in, and 3.309 in) to ensure a precise fit on Ford LS and Lincoln Thunderbird engines. The package contains all necessary seals and a gasket to prevent coolant leaks, although mounting hardware is not included.

Compatible Vehicles and Common Applications

• Replacement for thermostat housing failures in Ford LS models
• Suitable for Lincoln Thunderbird cooling system maintenance
• Addresses issues such as coolant leaks around the thermostat housing
• Helps resolve engine overheating caused by faulty thermostat operation
• Prevents coolant flow interruptions due to damaged or cracked housings

Installation Notes and Tips

Before installation, ensure the engine is cool and the cooling system is depressurized. Remove the old thermostat housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly to ensure a proper seal with the included gasket. Since mounting hardware is not included, reuse existing bolts if they are in good condition or source replacements matching the original specifications. Verify the thermostat orientation matches the original setup to maintain correct coolant flow.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-903 thermostat housing assembly undergoes rigorous quality checks to ensure durability and reliable performance in Ford LS and Lincoln Thunderbird vehicles. This product includes a gasket and seals to support leak-free operation. Please refer to Dorman’s warranty policy for specific coverage details.