This one came from a 1989 Golf with engine code PF. There are four windows in trigger wheel, all appear to be equal sized. You can see the Hall sensor at the top of the housing, at one of the four openings. You can see another opening on the left side of the wheel.
|VAG||037 905 205|
|Bosch||0 237 520 010|
|60 mm||mount face to shaft end|
|145 mm||mount face to coil tower|
|34.5 mm||dia mount|
|14 mm||shaft diameter|