Dorman 902-5156 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly for Volkswagen

The Dorman 902-5156 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for Volkswagen models including Beetle, Beetle Cabrio, Bora, Golf, Golf SportWagen, Jetta, and Passat. This assembly ensures efficient coolant flow and temperature regulation to support engine performance.

• Constructed from durable black plastic material for corrosion resistance
• Includes thermostat with a 176°F opening temperature for precise temperature control
• Comes with a standard gasket and O-ring to ensure a secure seal
• Features three outlet ports and two mounting holes with a 3.85-inch bolt hole center distance
• Package contains 1 thermostat housing, 2 bolts, 1 O-ring, and 1 thermostat for complete installation

Detailed Product Features and Specifications

The Dorman 902-5156 thermostat housing assembly is engineered with a 1.06-inch inside diameter to fit specific coolant passages in Volkswagen engines. Its flange dimensions—1.34 inches in length, 1.38 inches in width, and 0.325 inches in thickness—ensure a precise fit and secure mounting. The assembly does not include mounting hardware beyond the supplied bolts but comes with a standard gasket type to prevent leaks. The black plastic construction offers resistance to heat and corrosion, contributing to long-term durability. The included thermostat opens at 176 degrees Fahrenheit, helping maintain the engine within the optimal operating temperature range.

Compatible Volkswagen Models and Applications

This thermostat housing assembly is compatible with a range of Volkswagen vehicles, including:

• Volkswagen Beetle and Beetle Cabrio
• Volkswagen Bora
• Volkswagen Golf and Golf SportWagen
• Volkswagen Jetta
• Volkswagen Passat

It is designed to replace the original thermostat housing assembly in these models, ensuring proper coolant flow and temperature regulation.

Common Issues Addressed by This Thermostat Housing Assembly

• Engine overheating due to faulty thermostat housing leaks or cracks
• Coolant leaks caused by worn or damaged gaskets and seals
• Irregular engine temperature fluctuations affecting performance
• Failed thermostat causing improper coolant flow
• Corrosion or damage to the original plastic housing

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Use the included gasket and O-ring to prevent coolant leaks
• Torque bolts to manufacturer specifications to avoid damage
• Inspect surrounding hoses and connections for wear during installation
• Verify thermostat opening temperature matches vehicle requirements (176°F)

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5156 thermostat housing assembly undergoes rigorous quality control to ensure reliable performance. This product includes a standard warranty covering defects in material and workmanship, providing confidence in its durability and compatibility with Volkswagen vehicles.