Kia Sephia Spectra Sportage O2 Oxygen Sensor - 1AEOS00139


  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (15.7 inches) 
  • Upstream Sensor
  • 4 wire configuration
  • Replaces dealer part numbers: 0K01A18861A, 0K01A 18861 A, 0K08A18861B, 0K08A 18861 B, 0K08B18861B, 0K08B 18861 B, 0K2AA18861, 0K2AA 18861
  • Built and tested to strict quality control standards

Note: For clarification purposes:

  • Upstream location is between the catalytic converter and the engine
  • Downstream location is between the catalytic converter and the tailpipe


Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed

Note:  You may be required to reset the vehicle’s computer after installation of this part.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. step : Identifying your Oxygen Sensors (0:57)
    • Upstream oxygen sensors are located in between the engine and the catalytic converter
    • Downstream oxygen sensors are located in the catalytic converter or farther away from the engine than the catalytic converter
    • Locate your vehicle's firing order diagram
    • The bank that contains cylinder one is bank one
    • The bank that does not contain cylinder one is bank two, even if it does not contain cylinder two

Tools needed for replacement:

    1A - No Tools Needed

  • No Tools Needed

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Vehicle Fit

  • 1998-2001 Kia Sephia L4 1.8L Upstream O2 Oxygen Sensor
  • 2000-2001 Kia Spectra L4 1.8L Upstream O2 Oxygen Sensor
  • 2002 Kia Spectra L4 1.8L (Built Before 5/22/01 Production Date) Upstream O2 Oxygen Sensor
  • 1996-2002 Kia Sportage L4 2.0L Upstream O2 Oxygen Sensor
Part #: 1AEOS00139

How-to Video:

(03:08 min)