Dorman 902-5866 Engine Coolant Thermostat Housing - Water Pump

Reliable Engine Coolant Thermostat Housing for Audi and Volkswagen

The Dorman 902-5866 engine coolant thermostat housing is designed to provide a durable and precise fit for various Audi and Volkswagen models. Constructed from high-quality black plastic, this thermostat housing ensures efficient coolant flow and engine temperature regulation.

Key Features of Dorman 902-5866 Thermostat Housing

• Material: Durable black plastic construction for corrosion resistance
• Outlet port diameter: 1.515 inches for optimal coolant flow
• Height: 3.05 inches, designed to match OEM specifications
• Includes gasket and O-rings for a secure, leak-free seal
• Two mounting holes with 0.251-inch diameter and 2.524-inch center-to-center spacing
• Flange thickness of 0.308 inches for proper mounting stability
• Package contains one thermostat housing (thermostat and bolts not included)

Detailed Description

The Dorman 902-5866 engine coolant thermostat housing is engineered to meet the exact fitment requirements of select Audi and Volkswagen vehicles, including models such as the Audi A3, A4, A5, A6, Q3, Q5, and Volkswagen Golf, Jetta, Passat, Tiguan, and Beetle. Its black plastic construction offers resistance to corrosion and heat, ensuring long-lasting performance. The housing features two mounting holes spaced precisely 2.524 inches apart, allowing for straightforward installation. Included with the housing are a gasket and O-rings to help maintain a tight seal and prevent coolant leaks. Note that this part does not include the thermostat or mounting bolts.

Compatible Vehicles and Common Applications

• Engine coolant system maintenance for Audi A3, A4, A5, A6, Q3, Q5 models
• Replacement part for Volkswagen Golf, Jetta, Passat, Tiguan, Beetle, and related models
• Addresses issues such as coolant leaks, overheating, and thermostat housing damage
• Suitable for vehicles requiring a 1.515-inch outlet port diameter housing
• Ideal for restoring proper coolant flow and engine temperature regulation

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Use the included gasket and O-rings to prevent leaks and ensure a secure fit
• Verify mounting hole alignment with the 2.524-inch bolt hole center-to-center measurement
• Replace mounting bolts if damaged, as bolts are not included with this part
• Inspect the thermostat separately, as it is not included with this housing

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5866 thermostat housing undergoes rigorous quality control to ensure durability and reliable performance in your Audi or Volkswagen vehicle. Please refer to Dorman's warranty policy for specific coverage details.