![Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive](https://m.media-amazon.com/images/I/71lsXsHoDhS._AC_UF350,350_QL80_.jpg)
Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive
![Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive](https://m.media-amazon.com/images/I/71DuYm-X1jS._AC_UF350,350_QL80_.jpg)
Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive
![Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive](https://m.media-amazon.com/images/I/71tcHAHfOvL._AC_UF894,1000_QL80_.jpg)
Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive
![Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive](https://m.media-amazon.com/images/I/71jrphV3tAS._AC_UF350,350_QL80_.jpg)
Amazon.com: BOXI 902-814 Thermostat Housing Kit Assembly/Water Outlet with Sensor O-ring Replacement for 2002 2003 2004 2005 2006 Audi A4 / 2002 2003 2004 2005 A4 Quattro 1.8L (Replace 06B121111K 06B 121 111K) : Automotive
![Audi A4 Questions - 2004 Audi a4 3.0 quattro need to know where the thermostat is..and ho... - CarGurus Audi A4 Questions - 2004 Audi a4 3.0 quattro need to know where the thermostat is..and ho... - CarGurus](https://static.cargurus.com/images/site/2015/11/21/22/28/pic-3837247779433771463-1600x1200.jpeg)