Cadillac CT6 Oxygen Sensors
We found 17 eBay listings for Cadillac CT6 oxygen sensors, covering model years 2013 to 2020.
All Cadillac oxygen sensor listings by model
Last checked: . Confirm current price and fitment with the seller.
Compare oxygen sensors options for the Cadillac CT6 by part number, specification and seller fitment details. Matching listing titles mention 2013–2020; 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 17 listings for Cadillac CT6 oxygen sensors checked on 7 November 2026, 14 give model years between 2013 and 2020, most often 2016–2018 (6). Positions named in the titles: downstream (7). Part numbers in more than one title: 12666671. Titles are the sellers’ descriptions, not confirmed fitment: match the part number, model year, generation and engine before you buy.
Found 17 listings for "cadillac ct6 oxygen sensors"
Cadillac CT6 Oxygen O2 Sensor Downstream 3.6 2018 2017 2016
12666671 Oxygen Sensor Downstream For CADILLAC CT6 ATS CTS CHEVROLE CAMARO 16-18
12666671 Oxygen Sensor Downstream For CADILLAC CT6 ATS CTS CHEVROLE CAMARO
Cadillac CT6 Oxygen O2 Sensor Upstream 3.6 2018 2017 2016
Cadillac CT6 Oxygen O2 Sensor Downstream 3.6 2018 2017 2016
TRQ 21PZ27F Oxygen Sensor Set Fits 2016-2018 Cadillac CT6 2.0L 4 Cyl
2016-2020 CADILLAC CT6 3.6L ENGINE EXHAUST O2 LAMBDA OXYGEN SENSOR 13576795 OEM
Downstream Left Right O2 Lambda Oxygen Sensors For Cadillac ATS CT6 CTS 16-18 V6
2019-2020 CADILLAC CT6 AWD 3.6L V6 ENGINE EXHAUST O2 LAMBDA OXYGEN SENSOR OEM
Oxygen O2 Sensor Downstream For Cadillac CTS ATS CT6 Chevrolet Camaro 12666671
2016-2020 CADILLAC CT6 3.6L RIGHT PASSENGER OXYGEN O2 LAMBDA SENSORS 2PC OEM.
1x Oxygen O2 Sensor 12666671 For 2016-2018 Cadillac CT6 ATS CTS Chevrolet Camaro
Oxygen Sensor 12666671 For Chevrolet Camaro Cadillac ATS CTS CT6 V6 2016-2018
Delphi OEM Oxygen Sensor For Cadillac ATS CT6 CTS GMC Acadia Canyon Terrain
2016-2020 CADILLAC CT6 3.6L OXYGEN O2 LAMBDA SENSORS 2PC OEM.
12627140 Downstream Oxygen Sensor For 2013-2018 Cadillac ATS CT6 CTS Chevrolet
16-18 CADILLAC CT6 3.6L AWD EXHAUST LAMBDA O2 OXYGEN SENSOR SET 4 OEM
Questions about these listings
Which model years are named in the listings for Cadillac CT6 oxygen sensors?
14 listing titles give model years from 2013 to 2020; 2016–2018 appears most often (6 listings). Check your car’s year against the fitment details in each listing.
Which positions are named in the listings for Cadillac CT6 oxygen sensors?
The titles name downstream (7 listings). 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 Cadillac CT6 oxygen sensors?
12666671 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 Cadillac CT6 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 Cadillac CT6 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.