Note. Only one sensor is needed per axle. The other wheels do not have sensors.. Pair of Front + Rear Brake Pad Wear IndicatorsThis Premier part is manufactured to OE specifications and is offered with a 5 year warranty. If your part goes faulty at any point within 5 years of the purchase date. Cross Reference: BMW: 34351164371 BORG & BECK: BWL3009 CEF: BLK813 DELPHI: LZ0150 FERODO: FWI258 MINTEX: MWI0191 TRW: GIC168BMW: 34351164371 BORG & BECK: BWL3009 CEF: BLK81. Orders are dispatched as quickly as possible - check our detailed seller ratings.