Oxygen Sensor
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Oxygen Sensor Oxygen Sensor Oxygen Sensor
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NTK Oxygen Sensor

Part No. 23551 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
Length:27.5 in
Thread Size:18 mm
Wire Quantity:4

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2 Questions | 3 Answers
Displaying questions 1-2
  • Q:

    Is this the correct replacement for bank one oxygen sensor.
    Asked on 7/14/2011 by yelahorse from ft. mitchell, al

    1 answer



      This is an upstream sensor which is before catalytic converter.

      Answered on 7/14/2011 by Vincent from AAP
  • Q:

    is this 02 sensor down stream or up stream?
    Asked on 1/22/2011 by Jo from Houston, TX

    2 answers



      It is the upstream oxygen sensor.

      Answered on 1/27/2011 by Parts Guru Geo from AAP
    • A:

      According to the part description, this sensor is "pre-cat" which means "pre/before the catalytic converter". This analogy would indicates that the placement is "Up Stream" from the catalytic converter.

      Answered on 3/29/2011 by Foo from columbus Ohio
Displaying questions 1-2

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