Crankshaft Position CPS Sensor 1998-2009 VW Audi A4, A6, TT 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: AUDI / VW: BOSCH: 021906433E 03C906433A 078906433B 313760 0261210179 0261210178 STANDARD MOTOR: AIRTEX / WELLS: PC683 5S1644 SU5393 *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: * Models presented for reference purpose only! MAKE: MODEL: YEAR: AUDI A4 (1999 - 2005) AUDI A6 (2000 - 2004) AUDI TT (2002 - 2006) VOLKSWAGEN PASSAT (1998 - 2005)