Dorman 902-5134 Engine Coolant Thermostat Housing Assembly

Overview of Dorman Engine Coolant Thermostat Housing Assembly

The Dorman 902-5134 Engine Coolant Thermostat Housing Assembly is designed for reliable temperature regulation in Audi vehicles. Specifically compatible with Audi A4, A4 Quattro, and A6 models, this assembly includes a thermostat preset to open at 189°F to maintain optimal engine performance.

• Material: Durable black plastic construction
• Includes thermostat with 189°F opening temperature
• O-ring gasket included for secure sealing
• Three outlet ports for efficient coolant flow
• Two mounting holes for stable installation
• Flange dimensions: 3.5 inches length by 2.5 inches width
• Mounting hardware not included
• Regular grade type suitable for standard engine cooling systems

Detailed Product Description

The Dorman 902-5134 thermostat housing assembly is engineered to meet the cooling system requirements of Audi A4, A4 Quattro, and A6 models. Constructed from high-quality black plastic, this housing offers corrosion resistance and durability under typical engine operating conditions. The assembly includes a thermostat calibrated to open at 189 degrees Fahrenheit, ensuring the engine reaches and maintains the correct operating temperature. Featuring three outlet ports, the housing facilitates efficient coolant distribution, while the included O-ring gasket provides a reliable seal to prevent leaks. The housing mounts securely with two mounting holes, and its flange measures 3.5 inches in length and 2.5 inches in width, matching OEM specifications for proper fitment.

Common Applications and Problem Resolution

• Replacement for cracked or leaking thermostat housings in Audi A4, A4 Quattro, and A6
• Restores proper engine temperature regulation to prevent overheating
• Addresses coolant leaks caused by worn or damaged seals
• Resolves issues related to thermostat failure or sticking
• Improves coolant flow with multiple outlet ports for balanced circulation

Installation Notes and Tips

• Ensure engine is cool before beginning installation to avoid burns
• Use the included O-ring gasket for proper sealing; do not reuse old gaskets
• Verify flange dimensions and mounting hole alignment for correct fit
• Torque mounting bolts to manufacturer specifications (mounting hardware not included)
• Inspect coolant system for leaks after installation and refill coolant as needed

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5134 thermostat housing assembly undergoes quality checks to ensure durability and reliable performance in Audi A4, A4 Quattro, and A6 vehicles. While mounting hardware and additional seals are not included, the assembly comes with a thermostat and O-ring gasket to facilitate proper installation. Warranty coverage details should be confirmed with the product documentation or supplier.