Dorman 902-5873 Engine Coolant Thermostat Housing Assembly

Overview of Dorman Engine Coolant Thermostat Housing Assembly

The Dorman 902-5873 Engine Coolant Thermostat Housing Assembly is designed for reliable cooling system performance in select Audi models. This assembly includes a thermostat, gasket, and sensor, providing a complete solution for maintaining optimal engine temperature.

• Material: Durable black plastic construction
• Includes thermostat with 221°F opening temperature
• Comes with gasket and sensor for proper sealing and monitoring
• Features two outlet ports and three mounting holes for secure installation
• Flange dimensions: 5.7" length, 5.3" width, 0.4" thickness
• Compatible with Audi A8 Quattro, RS5, and S5 models

Detailed Product Description

The Dorman 902-5873 thermostat housing assembly is engineered to meet the cooling system requirements of Audi A8 Quattro, RS5, and S5 vehicles. Constructed from high-quality plastic, this black housing offers corrosion resistance and durability under typical engine operating conditions. The assembly includes a thermostat calibrated to open at 221 degrees Fahrenheit, ensuring precise regulation of coolant flow to maintain engine temperature within optimal ranges.

With two outlet ports and three mounting holes, the housing provides a secure fit and proper coolant routing. The included gasket ensures a tight seal to prevent leaks, while the sensor allows for accurate temperature monitoring. Flange dimensions and bolt hole spacing are designed to match OEM specifications, facilitating straightforward replacement.

Common Applications and Issues Addressed

• Replacement for faulty or leaking thermostat housing assemblies
• Resolves engine overheating caused by thermostat failure
• Prevents coolant leaks due to worn or damaged gaskets
• Restores proper coolant flow and temperature regulation
• Eliminates sensor-related temperature reading errors

Installation Notes and Tips

• Ensure engine is cool before beginning installation
• Verify compatibility with Audi A8 Quattro, RS5, or S5 model year
• Use the included gasket to prevent coolant leaks
• Torque mounting bolts to manufacturer specifications
• Check coolant levels and bleed air from the system after installation

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 902-5873 thermostat housing assembly undergoes rigorous quality control to ensure durability and reliable performance. This product includes a gasket and sensor to provide a comprehensive replacement solution. Warranty details are provided by Dorman and typically cover defects in material and workmanship.