Dorman 902-5218 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly for Audi and Volkswagen

The Dorman 902-5218 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for select Audi and Volkswagen models. This assembly includes a thermostat calibrated to open at 185 degrees Fahrenheit, ensuring efficient engine cooling and performance.

Key Features of Dorman 902-5218 Thermostat Housing Assembly

• Durable black plastic construction for corrosion resistance
• Includes thermostat with 185°F opening temperature for precise temperature regulation
• Gasket included to ensure a secure, leak-free seal
• Designed with 7 mounting holes and a flange length of 6.375 inches for proper fitment
• Compatible with multiple Audi and Volkswagen models including A4 Quattro, A5, A6 Quattro, Q5, and Touareg

Detailed Product Description

The Dorman 902-5218 thermostat housing assembly is engineered from high-quality plastic to resist corrosion and withstand engine heat cycles. The housing features a single outlet port and a flange thickness of 0.545 inches, providing a secure connection to the cooling system. With an inside diameter of 1.115 inches and bolt hole center spacing of 2.575 inches, this assembly is designed to match OEM specifications for a precise fit. The included thermostat opens at 185 degrees Fahrenheit, helping to regulate coolant flow and maintain engine temperature within optimal ranges. This assembly is compatible with a range of Audi and Volkswagen vehicles, including the A4 Quattro, A5, A7 Quattro, Q7, S4, SQ5, and Touareg models.

Common Applications and Issues Addressed

• Replacement for faulty or leaking thermostat housing assemblies
• Resolves engine overheating caused by stuck or malfunctioning thermostats
• Prevents coolant leaks due to worn or damaged gaskets
• Restores proper coolant flow in Audi A6 Quattro and Volkswagen Q5 cooling systems
• Maintains engine temperature stability for improved performance and longevity

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns. Remove the old thermostat housing carefully to prevent damage to surrounding components. Clean the mounting surface thoroughly before installing the new gasket and housing assembly. Torque mounting bolts evenly to manufacturer specifications. Since mounting hardware is not included, reuse existing bolts or source appropriate 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 902-5218 thermostat housing assembly undergoes rigorous quality checks to ensure durability and reliable performance. This product includes a gasket and thermostat to provide a complete solution for cooling system maintenance. Please refer to Dorman's warranty policy for specific coverage details.