Toyota Avalon Oxygen Sensors
We found 10 eBay listings for Toyota Avalon oxygen sensors, covering model years 2000 to 2011.
All Toyota oxygen sensor listings by model
Last checked: . Confirm current price and fitment with the seller.
Compare oxygen sensors options for the Toyota Avalon by part number, specification and seller fitment details. Matching listing titles mention 2000–2011; this is seller-described coverage, not confirmed fitment. Check the exact generation, engine and required specification before choosing a listing.
What the listings say: Of the 10 listings for Toyota Avalon oxygen sensors checked on 6 November 2026, 5 give model years between 2000 and 2011, most often 2000–2004 (4). Positions named in the titles: upstream (9), downstream (4). Part numbers in more than one title: 234-9021. Titles are the sellers’ descriptions, not confirmed fitment: match the part number, model year, generation and engine before you buy.
Found 10 listings for "toyota avalon oxygen sensors"
2PCS Upstream & Downstream Oxygen O2 Sensors For Toyota Avalon Camry 2.5L L4
2PCS Upstream & Downstream Oxygen O2 Sensors For Toyota Avalon Camry 2.5L L4
✅Air Fuel Ratio Oxygen Sensor Upstream For 2000-2004 Toyota Avalon 3.0L 234-9021
2X OEM Air Fuel Ratio Upstream Oxygen O2 Sensors For Toyota Avalon 3.0L 234-9009
OEM Upstream Oxygen O2 Sensor For Toyota Avalon Camry RAV4 2.4/3.3/3.5L 234-9042
2PCS Upstream & Downstream Oxygen O2 Sensors For Toyota Avalon Camry 2.5L L4
Set of 4 Oxygen O2 Sensors for Toyota Camry 3.5L V6 2008-2011 Avalon 234-9008 US
DENSO 234-9021 Upstream Oxygen Sensor For Toyota Avalon 2000-2004 3.0L V6
3PCS Oxygen Sensors for 2000-2004 Toyota Avalon 3.0L Upstream & Downstream
Denso 234-9021 Air-Fuel Ratio Sensor Front Upstream for 2000-2004 Toyota Avalon
Questions about these listings
Which model years are named in the listings for Toyota Avalon oxygen sensors?
5 listing titles give model years from 2000 to 2011; 2000–2004 appears most often (4 listings). Check your car’s year against the fitment details in each listing.
Which positions are named in the listings for Toyota Avalon oxygen sensors?
The titles name upstream (9 listings) and downstream (4). Order for the position on your car, as stated in the title or the seller’s fitment details.
Which part numbers appear in more than one listing for Toyota Avalon oxygen sensors?
234-9021 appears in more than one title. Compare the number on your old part with the listing before you buy.
How do I check fitment before buying Toyota Avalon oxygen sensors?
Find which sensor has failed. Upstream sensors sit before the catalytic converter and control fuelling; downstream sensors sit after it and monitor the converter. A fault code that names the bank and sensor number identifies the position. Some engines use a wideband (air-fuel ratio) sensor upstream. It is not interchangeable with an ordinary oxygen sensor, so match the type as well as the position.
Check compatibility before buying
These listings were found using Toyota Avalon oxygen sensors search terms. A search match does not establish fitment. Compare the part number, vehicle year, generation and engine with the seller's compatibility details. Confirm delivery, returns and the final price on eBay before ordering.
Match the oxygen sensor to its exact position
Reference: NTK guide to oxygen (lambda) sensor types. Use the catalogue’s correct regional application.