Oxygen Sensor - Direct Fit
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Denso Oxygen Sensor - Direct Fit

Part No. 234-4149 Warranty Details  
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Designed to meet the increasing demands of today's engines. Each of our oxygen sensors is constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each Denso sensor.
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Connector Gender:Male
Connector Type:Direct fit
Length:9.65 in
Overall Length:10.84 in
Thread Size:M18 mm
Wire Harness Length:6.96 in
Wire Quantity:4

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3 Questions | 4 Answers
Displaying questions 1-3
  • Q:

    We have two different answers from AAP personnel on whether this sensor is installed upstream (before) or downstream (after) the catalytic converter. Can we get a tie-breaker, please?
    Asked on 12/26/2013 by Chip from Montgomery County, Maryland

    1 answer



      Hi Chip, I researched and found that this oxygen sensor is for downstream (after) the catalytic converter. For assisting you further please provide the year, make, model and engine size of the vehicle.

      Answered on 12/27/2013 by Vincent from AAP
  • Q:

    Is bank 1 sensor 1 left, upstream or downstream?
    Asked on 6/11/2013 by oharmi

    2 answers



      With reference to your inquiry on the Denso Oxygen Sensor Direct Fit - part# 234-4149, bank 1- sensor 1 is located on upstream of the catalytic converter on bank 1 of the engine. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

      Answered on 6/11/2013 by Vincent from AAP
    • A:


      Answered on 3/27/2017 by wally from dorchester
  • Q:

    Dear Seller, kindly provide me with the Lenght of the attached cable / cord with this sensor also advice if this is before or after catalyst
    Asked on 5/15/2012 by Festus from Greenville, NC

    1 answer



      The specification of this part Denso Oxygen Sensor Direct Fit, Part No. 234-4149 manufactured by Denso: Screw Type / Flange Type: Screw, Wire Length: 9.65 in., Thread Size: M18, Wires: 4, Mounting location should be After Catalytic Converter.
      For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.
      For any further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and our representatives would be more than happy to assist you.

      Answered on 5/16/2012 by Aaron from AAP
Displaying questions 1-3

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