Alternator pulleys designed with a clutch built in (like Bosch alternators on VW, BMW and other makes), require a speciality tool to remove and swap the pulley over to the replacement alternator.
Option A:
33 Splines
Use with T50 Torx
Applicable For:
VW 1994 and newer, Golf III, Vento, Passat
Audi A3, TT
Porsche Boxster Alternators with free-wheeling Pulleys
For Installation, please watch https://www.youtube.com/watch?v=uKwEB9d845M
Option B:
M10 Spline x 1/2" In Square Drive Bit with Slider, T50 Star x 1/2" IN Suare Drive Bit with Slider for Bosch Alternators, Double-Ended 10 x 8 MM Hex Bit, Double-Ended 10 MM Hex Bit, Double-Ended M10 Spline x M10 Hex Bit, Doible-Ended M8 Spline x M10 MM Hex Bit, Double-Ended T40 Draper Star x M10 MM Hex Bit, Double-Ended T50 Draper Star x M10 MM Hex Bit, Bit Holder 10 MM Hex x 1/2" IN Square Drive, Four Prong Connector, Hexagon Slider, 2 Pulley Connectors .
