Front ABS Wheel Speed Sensor Fits: 2000-2004 Audi A6, S4, S6 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. OE REFERENCE PART CODES: VW / AUDI: AIRTEX: WELLS: 4B0927803B 5S10471 SU11923 SU11924 FLENNOR: STANDARD MOTOR: OTHER: FSE51406 ALS521 0265006578 *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: Year: Sub-Model: Model: Make: Engine: 2003 Avant Wagon 4-Door S6 Audi 4.2L 4172CC V8 GAS 2002 Avant Wagon 4-Door S6 Audi 4.2L 4172CC V8 GAS 2004 Base Sedan 4-Door A6 Quattro Audi 4.2L 4172CC V8 GAS 2003 Base Sedan 4-Door A6 Quattro Audi 4.2L 4172CC V8 GAS 2002 Base Sedan 4-Door A6 Quattro Audi 4.2L 4172CC V8 GAS 2001 Base Sedan 4-Door A6 Quattro Audi 4.2L 4172CC V8 GAS 2000 Base Sedan 4-Door A6 Quattro Audi 4.2L 4172CC V8 GAS 2001 Base Sedan 4-Door S4 Audi 2.7L 2671CC V6 GAS Turbo 2000 Base Sedan 4-Door S4 Audi 2.7L 2671CC V6 GAS Turbo 2001 Avant Wagon 4-Door S4 Audi 2.7L 2671CC V6 GAS Turbo 2004 Base Sedan 4-Door A6 Audi 3.0L 2976CC V6 GAS 2004 Base Sedan 4-Door A6 Quattro Audi 3.0L 2976CC V6 GAS 2003 Base Sedan 4-Door A6 Audi 3.0L 2976CC V6 GAS 2003 Base Sedan 4-Door A6 Quattro Audi 3.0L 2976CC V6 GAS 2002 Base Sedan 4-Door A6 Audi 3.0L 2976CC V6 GAS 2002 Base Sedan 4-Door A6 Quattro Audi 3.0L 2976CC V6 GAS 2004 Avant Wagon 4-Door A6 Quattro Audi 3.0L 2976CC V6 GAS 2003 Avant Wagon 4-Door A6 Quattro Audi 3.0L 2976CC V6 GAS 2002 Avant Wagon 4-Door A6 Quattro Audi 3.0L 2976CC V6 GAS