Belt Pulley Ø mm: 53 | Distance from pulley to alternator mm: 18 | Fitting Depth mm: 7.2 | Inner diameter mm: 17 | Manufacturer Restriction: Bosch | Number of grooves: 6 | Outer diameter mm: 60 | Overall Length mm: 45 | Rotation Direction: Clockwise rotation | Supplementary Article/Info 2: with cap | Thread Size: M16x1 | for manufacturer number: 920856