This is the 4-Pin Drive Flange that goes between the generator and base assembly. The pins on these often become loose over time, so the drive will need to be replaced on older magnetos to maintain accurate timing. This kit includes a new nylock nut, washer, drive and woodruff key.

Fits both 4&8 cylinder magnetos for the following models:
- Super Mag III, Super Mag IV, Super Mag V