Description
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How-To & Tools
Product Reviews
Q&A
Vehicle Fit

Specifications:

  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (17.8 inches) 
  • Downstream Sensor
  • 4 wire configuration
  • Replaces dealer part numbers: 22690AA420, 22690 AA420, 22690AA540, 22690 AA540, 22690AA640, 22690 AA640
  • 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

If you have a bad O2 sensor causing your vehicle to fail an emission test then this is the part for you.

Install note:

You may be required to reset the vehicle computer after installation of this part.

Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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.

  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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Year Make Model Description
1999-2003Subaru Forester Subaru Forester H4 2.5L Downstream O2 Oxygen Sensor
1999Subaru Impreza Subaru Impreza H4 2.2L California Emissions (Engine ID EJ223) Downstream O2 Oxygen Sensor
1999Subaru Impreza Subaru Impreza H4 2.2L (Engine ID EJ222) (excluding California Emissions) Downstream O2 Oxygen Sensor
1999Subaru Impreza Subaru Impreza H4 2.5L Downstream O2 Oxygen Sensor
2000-2004Subaru Impreza Subaru Impreza H4 2.5L Downstream O2 Oxygen Sensor
1999Subaru Impreza Outback Subaru Impreza Outback H4 2.2L California Emissions (Engine ID EJ223) Downstream O2 Oxygen Sensor
1999Subaru Impreza Outback Subaru Impreza Outback H4 2.2L (Engine ID EJ222) (excluding California Emissions) Downstream O2 Oxygen Sensor
1999Subaru Impreza Outback Subaru Impreza Outback H4 2.5L Downstream O2 Oxygen Sensor
2000-2004Subaru Impreza Outback Subaru Impreza Outback H4 2.5L Downstream O2 Oxygen Sensor
Part #: 1AEOS00137


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(03:08 min)