Calorstat WF0187 Engine Coolant Thermostat Housing - Lower

Engine Coolant Thermostat Housing for VW and Audi

Calorstat WF0187 is an engine coolant thermostat housing for select Volkswagen and Audi applications. It includes a gasket or seal, which supports a proper coolant seal during thermostat housing replacement. This part is a direct-fit option for vehicles such as the Volkswagen Golf, Jetta, EuroVan, R32, Eos, and Audi A3 Quattro and TT Quattro.

Key Features

• Engine coolant thermostat housing for cooling system service
• Gasket or seal included for sealing at installation
• OE supplier context for Audi and Volkswagen applications
• Cross-references Calorstat WF0187 for the same application
• Interchanges with Genuine 022121117C and Motorad TA9920

Detailed Description

Calorstat WF0187 is built for cooling system repair where the thermostat housing must maintain a secure coolant path and stable operating temperature. It is used on select Volkswagen and Audi models, including 1999-2005 Volkswagen Golf, 1999 and 2000-2004 Volkswagen Jetta, 2001-2003 Volkswagen EuroVan, 2004 and 2008 Volkswagen R32, 2007-2008 Volkswagen Eos, 2004-2006 Audi TT Quattro, and 2006-2009 Audi A3 Quattro. The included gasket or seal supports a clean replacement on the original housing location. This part number, WF0187, is also referenced by Genuine 022121117C and Motorad TA9920.

What It Is Used For

• Replacing a cracked or leaking thermostat housing
• Restoring coolant flow control after thermostat service
• Addressing coolant seepage at the housing seal
• Correcting overheating caused by housing or seal failure
• Servicing the cooling system on Volkswagen Golf, Jetta, and Audi TT Quattro applications

Installation Notes and Tips

Verify engine code and housing style before ordering, since fitment varies by model and position. This part fits lower-position applications on 2000-2004 Volkswagen Jetta and 2001-2003 Volkswagen EuroVan, and N/A-position applications on the other listed vehicles. Inspect the mating surfaces, flush contaminated coolant if needed, and replace the thermostat housing only after the engine has cooled completely.

Quality Assurance

Calorstat is listed as an OE supplier to Audi and Volkswagen for the applications shown, which supports confidence in fitment and application matching. Confirm the part number WF0187 against the original housing before installation.