Replacement Oxygen Sensor Upstream - Replaces 234-9021, 8946741030, 8946741040 - Compatible with Lexus and Toyota Vehicles - ES300, Avalon, Camry, Sienna, Solara - 3.0L - 2000, 2001, 2002, 2003, 2004 - Very Good

Very Good - Item has been inspected and is fully functional.

Sometimes referred to as O2 or Lambda Sensor measures the amount or proportion of oxygen mixed in the fuel of your vehicle which is essential in the proper operation of your catalytic converter. The vehicle then determines whether it is necessary to adjust for it to perform properly. Compatible with the following vehicles: 2000-2001 ES300 3.0L 2000-2004 Avalon 3.0L 2001 Camry 3.0L 2001-2003 Sienna 3.0L 2001-2003 Solara 3.0L Replaces part numbers: 234-9021, 8946741030, 8946741040, 8946733030, 5S3572 . This is a compatible replacement part manufactured by AA Ignition. This 02 Oxygen Sensor is NOT a genuine OEM part and their associated vehicle models and part numbers are used in this listing only to identify the vehicles and part models this oxygen sensor fits.