For 2009 Audi A4 Quattro Reference Sensor API 77365YYPP 3.2L V6 Base

Reference Sensor fits Audi A4 Quattro 2005-2009 3.2L V6 Convertible 99NBPTKN

For 2008-2010 Audi A5 Quattro Reference Sensor Bremi 31677NSDR 2009 3.2L V6 Base

API SERVICE TECH Reference Sensor fits Audi A4 Quattro 2009 3.2L V6 Base 29TCGX

For 2009 Audi A4 Quattro Reference Sensor 94288FM 3.2L V6 Base

API 27QR16P Reference Sensor Fits 2009 Audi A4 Quattro Base 3.2L V6

For 2009 Audi A4 Quattro Reference Sensor API 61893NSWB 3.2L V6 Base

Holstein 19ZQ83R Reference Sensor Fits 2009 Audi A4 Quattro 3.2L V6 CALA