WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.
FAN SPECIFICATION
Type
Thread
Tightening Specification
Measure
1AZ Fan clutch on water pump Coupling nut (left-hand threads)