Mercedes typically pairs the ABS/ESP wheel speed sensor lead with the brake pad wear sensor lead, where both leads are mated and plugged into a wiring harness receptacle located in the well wheel. If the vehicle is equipped with Airmatic, the speed sensor and Airmatic leads are paired.

This paired lead combo is held in place within the receptacle by means of a thin wire spring clip placed within a groove located in the receptacle housing.

But this wire retention clip is not displayed in the Electronic Parts Catalog's illustrations of speed, pad wear or Airmatic sensor leads and my local dealer is unaware of its existence.

Is there a part number for this clip or an aftermarket source? Or is the clip illustrated in another section of the EPC?