ABS Wheel Speed Sensor Rear R / L 99-03 BMW E39 528i, 540i, M5 In order to avoid return hassle and save yours and our time, you must cross-check indicated reference part numbers against those found on your old unit. Do not rely on vehicles compatibility list, which is presented for the reference purpose and shouldn't be your guide to determine compatibility. If you are unsure, you may call local dealership (auto parts dept.) to obtain correct part numbers or ask your mechanic. If you would like us to help you, please contact us and provide your vehicle's detailed info such as: Make/Model/Year/Engine/Full VIN# and we will do our best to find compatibility. PART REFERENCE NUMBERS: BMW: STANDARD MOTOR: 34526756376 34520025724 34521165535 ALS435 AIRTEX/WELLS: BECK/ARNLEY: 5S10530 SU11983 0844048 FLENNOR DORMAN: FSE51493 970120 *Please cross-check indicated OEM reference codes against those found on your current unit. You may call local dealership (auto parts dept.) to obtain correct numbers. COMPATIBLE VEHICLES: * Fits rear right or left side (indicated price is for 1 sensor). Models presented for reference purpose only! Year: Model: Year / Engine type / Code: 2001-2005 BMW E39 525 M54 1999-2000 BMW E39 528 M52 2001-2005 BMW E39 530 M54 1999-2003 BMW E39 540 V8 4.4L M62 2000-2003 BMW E39 M5 S62