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234-4209 Oxygen Sensor - Sold individually

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$131.26Save: $79.77(61%)
Manufacturer #234-4209
Vehicle Info Required to Guarantee FitAdd Vehicle


After Catalytic Converter, Front Or Rear, After Catalytic Converter, Driver Side, After Catalytic Converter, Passenger Side, After Catalytic Converter, Rear, After Secondary Catalytic Converter, Before Catalytic Converter, After Primary Catalytic Converter, After Catalytic Converter, Driver Or Passenger Side, After Catalytic Converter, Before Or After Catalytic Converter, Before Or After Catalytic Converter, Center, After Catalytic Converter, Front
0.71 in. Thread Diameter; Heated Sensor; Universal Fit
Quantity Sold:
Sold individually
Product Fit:
Direct Fit
Wire Length:
11.77 in. Wire Length
Mounting Style:
Threaded-in Mounting Style
Replaces OE Number:
12559850, 12570149, 88975496, 8946502110, 8946502190, 8946513030, 8946548170, 8946548180, 8946706070, 8946706110, 8946712010, 8946748050, MD183145, MD184939, MD185334, MR985103
Interchange Part Number:
1-year Denso limited Warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment Information

Vehicle Name
Fitment Information
1989 Dodge Colt
4 Cyl 1.6L
Eng.VIN: Z, O.E. Quality Universal Replacement Sensor
1989 Mitsubishi Mirage
4 Cyl 1.6L
O.E. Quality Universal Replacement Sensor
1989 Plymouth Colt
4 Cyl 1.6L
Eng.VIN: Z, O.E. Quality Universal Replacement Sensor
1989-1990 Dodge 2000 GTX
4 Cyl 2.0L
Eng.VIN: R, O.E. Quality Universal Replacement Sensor
1989-1992 Mitsubishi Galant
4 Cyl 2.0L
Eng.VIN: R, O.E. Quality Universal Replacement Sensor
Page 1 of 226 | Showing 1 - 5 of 1127 results

Product Information


Meticulously engineered and evaluated to exceptional standards, Denso's 4-wire OE replacement oxygen sensors will restore your ride to fresh-from-the-factory quality with their perfect fit and dependable performance. Founded in 1949, DENSO is a leading aftermarket supplier of innovative, OE-quality products and technologies in the automotive industry.

  • Constructed with corrosion-resistant stainless steel with aluminum-oxide trap layer
  • Boosts sensor response using refined zirconia element
  • Utilizes PTFE filter to protect casing against water and engine contaminants
  • Has undergone stringent evaluation processes to ensure dependable performance and passenger safety
Need help?Call our product expert1-866-529-0412
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Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

Is the upstream co2 sensor actually a air fuel sensor?David P.Apr 08, 2020
Best Answer:I need 2 sensors the bank 1 sensor 2 and the bank 2 sensor 2 for toyota RAV4 2001 and the front ABS sensors which would be the code of these products to order them without mistake, thank you.
Eduardo R.Dec 18, 2020
Does this product come with 4-wire harness?Lisa T.Jan 16, 2023
Best Answer:Hi Lisa, I'm glad to assist you. Yes. It is a 4-wire Universal oxygen sensor. For us to carefully check and be accurate on the part you need, please provide the complete information of your vehicle (year, make, model, submodel, and engine size). The VIN would be much helpful.
Jeonino E.STAFFJan 16, 2023
Is this upstream or downstream? I have a Toyota Avalon 6cyl that is requiring the series 1 bank 1 OEM sensor. Is manufactor #234-4209 the correct part?Mary P.Nov 04, 2021
Best Answer:Hi Mary, I'm glad to assist you. This is for the upstream location. You will have to use the original connector and requires cutting and splicing. This denso oxygen sensor is correct for the bank 1 sensor 1 position. Grab our sale price and click the link below to order today. I hope this helps. Happy shopping. <a href="https://www.carparts.com/oxygen-sensor/denso/np2344209?can=CPJE1043" target="_blank">https://www.carparts.com/oxygen-sensor/denso/np2344209?can=CPJE1043</a>
Jeonino E.STAFFNov 04, 2021
Someone asked if this upstream or downstream and you answered upstream. Why does the description say after the cat?Roger N.Feb 19, 2024
Best Answer:Hi Roger, thank you for reaching out. The location of this universal product varies depending on the vehicle application. Kindly call our parts team at 1-866-529-0412 and tell us more about your vehicle. Have a nice day.
Aldrin P.STAFFFeb 19, 2024
I have a 2010 Lexus LS 460 RWD. Will it be the replacement for bank 1 sensor 1, driver side ?Mike M.Aug 03, 2023
Best Answer:Hi Mike, I'm pleased to assist you. This is for the AWD. We have available the direct-fit oxygen sensor for Bank 1 Sensor 1 of the 2010 Lexus LS460 RWD, driver side. Click the link below to view and continue ordering at a discounted price while supplies last. Enjoy shopping! <a href="https://www.carparts.com/details/Lexus/LS460/Denso/Oxygen_Sensor/2010/NP2349100.html?can=CPGG4850_CSQA_20230803" target="_blank">https://www.carparts.com/details/Lexus/LS460/Denso/Oxygen_Sensor/2010/NP2349100.html?can=CPGG4850_CSQA_20230803</a>
Grace G.STAFFAug 04, 2023

Customer Reviews

Easy install. About 15 minutes extra required to adapt sensor to OEM harness but worth cost savings!
Purchased on Mar 11, 2014
Fabulous Job and the durability of the difference I see in my vehicle and the ride.
Jeremiah W.
Purchased on Dec 29, 2022
Oxygen Sensor - Sold Individually
great and half the cost
needed sensor, parts stores had double the price and had to order it.
Purchased on May 09, 2012