Keeps your various running the way it should — this SACHS part restores the original function of a worn or failed Radiator Fan Clutch OE Ref, built to OEM reference 51066017020 rather than a generic approximation.
Technical details are not specified.
SACHS identifies it as 2100 043 231, EAN: 4013872467013. Match that against OEM 51066017020 or your old part before fitting, particularly if your vehicle's had any running changes across its production years.
Confirmed for selected various vehicles. Use the vehicle registration lookup tool if you're not certain, or browse Engine Cooling System for other options.