Dorman 902-958 Engine Coolant Thermostat Housing

Overview of Dorman Engine Coolant Thermostat Housing 902-958

The Dorman 902-958 engine coolant thermostat housing is designed for reliable cooling system performance in select Audi and Volkswagen models. Constructed from durable black plastic, this thermostat housing ensures proper coolant flow and sealing for efficient engine temperature regulation.

• Material: High-quality black plastic for corrosion resistance
• Outlet port diameter: 1.5 inches for precise coolant flow
• Includes gasket and O-rings for secure sealing
• Three mounting holes with 0.31-inch diameter for stable installation
• Housing neck angle: 90 degrees to match OEM specifications
• Package contains water outlet and O-ring; bolts and thermostat not included

Detailed Product Description

The Dorman 902-958 engine coolant thermostat housing is engineered to meet the exact fitment requirements of Audi A3 and Volkswagen models including Golf, CrossFox, Lupo, and SportVan. Its black plastic construction offers resistance to corrosion and heat, maintaining system integrity over time. The 1.5-inch outlet port diameter and 90-degree housing neck angle ensure compatibility with the vehicle’s cooling system layout. This housing comes with essential sealing components such as a gasket and O-rings to prevent leaks and maintain optimal coolant circulation. Note that the thermostat and mounting bolts are not included, allowing for flexible installation with existing or replacement parts.

Compatible Vehicles and Common Applications

This thermostat housing is compatible with the following vehicles:

• Audi A3
• Volkswagen Golf
• Volkswagen CrossFox
• Volkswagen Lupo
• Volkswagen SportVan

It is commonly used to address issues such as:

• Coolant leaks around the thermostat housing
• Overheating caused by faulty or damaged housing
• Cracks or warping in the original thermostat housing
• Improper coolant flow due to worn seals or gaskets
• Replacement during cooling system maintenance or upgrades

Installation Notes and Tips

When installing the Dorman 902-958 thermostat housing, ensure the mounting surface is clean and free of debris. Use the included gasket and O-rings to achieve a proper seal and prevent leaks. Since bolts are not included, reuse the original hardware if in good condition or source OEM bolts matching the 0.31-inch mounting hole diameter. Verify the 90-degree housing neck angle aligns with your vehicle’s coolant hose routing. It is recommended to 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 902-958 engine coolant thermostat housing undergoes rigorous quality control to ensure durability and performance. This product includes a limited warranty against defects in material and workmanship, providing confidence in its reliability for Audi and Volkswagen cooling system repairs.