Calorstat TH4561.87J Engine Coolant Thermostat

Engine Cooling Thermostat for VW, Volvo, Audi

Calorstat TH4561.87J is a standard engine coolant thermostat built for precise coolant flow control in a wide range of Volkswagen, Volvo, Audi, and select Ford applications. It opens at 188°F (87°C) and includes a gasket and rubber seal for a direct-fit cooling system service.

• Standard engine coolant thermostat for temperature regulation
• Start-to-open temperature: 188°F / 87°C
• Gasket or seal included
• Jiggle pin weep hole included for air bleeding
• Seal type: gasket with rubber seal material
• Sealing flange outside diameter: 2.12 in.
• Valve-seat diameter: 54.0 mm
• By-pass valve diameter: 35.0 mm

Detailed Product Information

This Calorstat thermostat is specified for vehicles that use an 87°C cooling strategy, helping maintain stable operating temperature in engines such as the Volkswagen Beetle, Golf, Jetta, Passat, and Volvo 850. The TH4561.87J part number is also referenced in cooling system service for Audi 80 and Audi A4 applications, along with additional Volkswagen and Volvo models listed below. This part cross-references 234-192JV and 7234-192JV for the same application.

Fitment includes 2011-2013 Volkswagen Clasico; 1998-2010 Volkswagen Beetle; 2007-2010 Volkswagen Bora; 2000-2009 Volkswagen Derby; 2006-2009 Volkswagen EuroVan; 2000-2009 Volkswagen Pointer; 2007 Audi A4; 1985-2006 Volkswagen Golf; 2004-2005 Volkswagen Passat; 1990-1997 Volkswagen Passat; 1980-2004 Volkswagen Jetta; 2000-2004 Volvo S40; 2000-2004 Volvo V40; 2001-2003 Volvo S60; 1995-2002 Volkswagen Cabrio; 1998-2002 Volvo V70; 1998-2001 Volvo C70; 1998-2000 Volvo S70; 1997-1998 Volvo S90; 1997-1998 Volvo V90; 1997 Ford F-150; 1993-1997 Volvo 850; 1992-1997 Volvo 960; 1985-1993 Volkswagen Cabriolet; 1990-1992 Volkswagen Corrado; 1991 Volkswagen Fox; 1987-1989 Volkswagen Fox; 1988-1990 Audi 80; 1988 Audi 90; 1988 Volkswagen Corsar; 1981-1987 Volkswagen Atlantic; 1986 Ford Aerostar; 1984-1985 Audi 4000; 1984-1985 Ford Bronco II; 1985 Volkswagen Quantum; 1982-1983 Volkswagen Quantum; 1982-1983 Volkswagen Vanagon; 1980 Volkswagen Vanagon; 1980 Volkswagen Rabbit Pickup; 1979 Ford Mustang; 1975-1979 Ford Pinto; 1975-1979 Mercury Bobcat; 1979 Mercury Capri; 1976-1977 Mercury Capri; and 1972-1974 Mercury Capri.

What It Helps Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuation caused by a worn thermostat
• Coolant flow control issues in the radiator circuit
• Air pockets in the cooling system during service
• Cooling system maintenance on VW, Volvo, Audi, and select Ford models

Installation Notes

Verify the thermostat opening temperature, flange dimensions, and valve-seat size against the original part before installation. Clean the housing sealing surfaces thoroughly and replace the gasket or seal as part of the service. The jiggle pin weep hole should be oriented according to the vehicle’s cooling system layout to help purge trapped air during refill.

Quality Assurance

Calorstat TH4561.87J is built to the listed dimensional and temperature specifications for service replacement use. Confirm vehicle application by year, make, model, and cooling system requirements before ordering. The TH4561.87J part number is commonly searched for Volkswagen Beetle, Golf, Jetta, Passat, and Volvo 850 thermostat replacement.