Dorman 902-858 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly

The Dorman 902-858 Engine Coolant Thermostat Housing Assembly is designed for precise temperature regulation in Ford and Mercury vehicles. This metal thermostat housing assembly ensures consistent engine performance and helps maintain optimal operating temperatures for your Ford Five Hundred, Mercury Montego, and Freestyle models.

• Durable metal construction with black finish for corrosion resistance
• Includes thermostat with 180°F opening temperature for accurate coolant flow control
• Comes with a gasket to ensure a secure, leak-free seal
• Features two mounting holes with 2.7-inch bolt hole center spacing
• Flange dimensions: 3.5 inches length, 1.4 inches width, and 0.25 inches thickness
• Includes one outlet port and no bleeder hole
• Compatible with Ford Five Hundred, Mercury Montego, and Freestyle models

Product Details and Specifications

The Dorman 902-858 thermostat housing assembly is constructed from metal to provide durability and resistance to heat and corrosion. The black finish adds an extra layer of protection against environmental factors. This assembly includes a thermostat calibrated to open at 180 degrees Fahrenheit, ensuring your engine coolant circulates at the correct temperature to prevent overheating or inefficient engine operation. The package contains one thermostat housing, one water outlet, one thermostat, and one gasket for installation. The housing features two mounting holes spaced 2.7 inches apart center to center, with flange dimensions designed to fit precisely on compatible engines. The inside diameters of the ports measure 0.8 inches and 0.6 inches, accommodating proper coolant flow.

Compatible Vehicles and Applications

This thermostat housing assembly is compatible with select Ford and Mercury vehicles, specifically the Ford Five Hundred, Mercury Montego, and Mercury Freestyle models. It is engineered to meet the original equipment specifications for these vehicles, making it a suitable replacement part for maintaining engine cooling system integrity.

• Prevents engine overheating by regulating coolant flow
• Replaces worn or damaged thermostat housing assemblies
• Eliminates coolant leaks caused by cracked or corroded housings
• Restores proper engine temperature control for improved performance
• Helps maintain efficient fuel consumption by stabilizing engine temperature

Installation Notes and Tips

Installation of the Dorman 902-858 thermostat housing assembly requires basic mechanical skills and standard hand tools. Ensure the engine is cool before beginning the replacement to avoid injury. Remove the old thermostat housing carefully, clean the mounting surface thoroughly, and install the included gasket to prevent leaks. Torque the mounting bolts evenly to the manufacturer's specifications. Since mounting hardware is not included, reuse the original bolts or acquire suitable replacements. Verify proper thermostat operation after installation by monitoring engine temperature during initial operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-858 thermostat housing assembly undergoes rigorous quality control to ensure durability and reliable performance. This product includes a gasket and thermostat to provide a complete solution for your cooling system needs. Please refer to Dorman's warranty policy for specific coverage details.