Oxygen Sensor
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Oxygen Sensor Oxygen Sensor
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NTK Oxygen Sensor

Part No. 21004 Warranty Details  

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NTK Oxygen Sensors meet OE specifications for form, fit and function and have a direct-fit, OEM-style connector for installation.
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Connector Type:OE Type
Exact Fit:Yes
Length (Sealing Surface To End Of Connector):12.25 in
O.E.M. Number:25312185
Thread Size:18 mm
Wire Quantity:3

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1 Question | 1 Answer
Displaying question 1
  • Q:

    which sensor goes in right before the catalic converter?
    Asked on 11/7/2012 by pam from lakeland florida

    1 answer



      The oxygen sensor located before the catalytic converter is upstream and the oxygen sensor located after the catalytic converter is downstream. For further assistance regarding the NTK Oxygen Sensor (Part No. 21004), please provide the year, make, model and engine size of your vehicle. For more information, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

      Answered on 11/7/2012 by Steve from AAP
Displaying question 1

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