Oxygen sensor: Composed of zirconia internal ceramic material, with porous platinum coating and metal shell protection. It improve heat resistance, wear resistance, high temperature resistance, and extend the service life of o2 sensors Reference Number: 234-9012, 2349012, 234 9012, 89467-08040, 89467 08040, 8946708040, 89467-08020, 8946708020, 89467 08020 Compatible Vehicles: Compatible with Toyota Sienna CE, LE, XLE, Limited Mini Passenger 3.5L-V6, for Toyota Sienna CE, LE, XLE, Limited Mini Passenger 3.3L-V6 GAS 2004 2005 2006 2007 2008 2009 2010 Car O2 Sensor Function：O2 sensor monitors the mixed gas, ensuring that the engine is in an optimal combustion state of the mixed gas; The o2 sensor can control the automobile exhaust emission and improve the automobile engine fuel combustion quality Replacement of Oxygen Sensor：The service life of the normal ignition coil is usually about 100000 km - 120000 km. If the oxygen sensor is damaged, whether it reaches 100000 km or not, it needs to be replaced in time 234-9012 4-Wire O2 Oxygen Sensor Air Fuel Ratio Sensor Upstream Compatible with Toyota Sienna CE, LE, XLE, Limited Mini Passenger 3.5L-V6 3.3L-V6 GAS 2004-2010,Replace 2349012,89467-08040