URO 032121111AP Engine Coolant Thermostat Housing - Lower

Reliable Engine Coolant Thermostat Housing for Audi and Volkswagen

The URO Engine Coolant Thermostat Housing 032121111AP is designed to maintain optimal engine temperature for select Audi and Volkswagen models. Engineered with precision, this thermostat housing ensures efficient coolant flow and reliable performance.

• Constructed from durable plastic material for corrosion resistance
• Includes a rubber gasket and air vent (bleeder valve) for proper sealing and venting
• Outlet port diameter of 1.03 inches for precise coolant flow
• Flange dimensions: 3.8 inches length, 2.7 inches width, and 0.53 inches thickness
• Housing neck angle set at 90 degrees for accurate fitment
• Center bore diameter of 1.77 inches and bolt hole diameter of 0.29 inches
• Thermostat included for integrated temperature regulation
• Compatible with multiple outlet ports (5 total) to support complex cooling systems

Detailed Product Description

This URO thermostat housing (part number 032121111AP) is specifically designed for use in Audi A3 and Volkswagen Golf, Lupo, Polo, and SportVan models. The plastic construction offers resistance to corrosion and heat, extending the life of the cooling system component. The included rubber gasket ensures a tight seal to prevent coolant leaks, while the integrated air vent (bleeder valve) allows trapped air to escape, improving system efficiency. The housing’s flange and bore dimensions are engineered to match OEM specifications, ensuring a secure and precise fit. The 90-degree neck angle facilitates proper hose alignment, reducing stress on connected components. This part also includes the thermostat, providing a complete solution for temperature regulation within the engine cooling system.

Common Applications and Issues Addressed

• Replacement for cracked or leaking thermostat housings
• Resolving coolant leaks caused by worn or damaged gaskets
• Fixing overheating issues due to faulty thermostat operation
• Eliminating air pockets in the cooling system with the built-in bleeder valve
• Restoring proper coolant flow in Audi A3 and Volkswagen Golf, Lupo, Polo, and SportVan models

Installation Notes and Tips

When installing the URO 032121111AP thermostat housing, ensure the engine is cool before beginning work. Clean the mounting surface thoroughly to remove old gasket material and debris. Use the included rubber gasket to achieve a proper seal and prevent leaks. Verify that the housing neck angle aligns correctly with the coolant hoses to avoid stress or kinks. Bleed the cooling system after installation to remove trapped air using the integrated air vent. Torque bolts to manufacturer specifications to avoid damage.

Quality Assurance and Warranty

URO parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. This thermostat housing is tested for fit, form, and function to ensure compatibility with specified Audi and Volkswagen models. While specific warranty details are not provided, URO products typically come with a limited warranty against defects in material and workmanship.