Features: 1.OE Number: The referencing OE number of this alternator slip ring is 28?94867, which is molded and designed depend on the original data. 2.Fitment: The alternator slipring is a replacement for Valeo Alternators, please check the model of your alternator before ordering. 3.Function: The slip ring directs the alternator rotor coil to the outside for measuring rotor current and controlling motor speed. 4.Parameter: The inner diameter of this alternator slip ring is 6.7/9.0mm ID, the outside diameter is 14.9mm, and the length is 48.5mm. 5.Easy to Install: Stringently manufactured to meet the original standard, perfect replacement for the old or broken one, improving the time efficiency. Specification: Item Type: Alternator Slip Ring_x000D_ OE Number: 28?94867_x000D_ Material: ABS, copper_x000D_ Size: 6.7/9.0mm (0.26/0.35in) ID, 14.9mm/0.59in OD, 48.5mm/1.91in L Note: Please double check the part number of your item, matching information is for reference only._x000D_ If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!_x000D_ Suitable for most internal fan with 4 mm slots