Toyota Lexus O2 Oxygen Sensor AM-34404778

List Price:$52.95
AM Price:$21.99
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Part Number: AM-34404778


  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (24.50 inches) 
  • Downstream Sensor as listed per applications
  • Heated
  • 4 wire configuration
  • 4 terminal configuration
  • 2 Bolt flange mounting
  • Replaces dealer part numbers: 8946529525, 89465 29525, 8946519695, 89465 19695, 8946529525, 89465 29525, 8946529895, 89465 29895, 8946549065, 89465 49065, 8946549075, 89465 49075
  • 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

Install Note:

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


Electrical and electronic parts are not eligible for a refund once installed or plugged in. In the event a manufacturing defect is found, the item may be eligible for an exchange.

Attention California Customers:

WARNING: Cancer and Reproductive Harm -

10 Year Warranty

This item is backed by a 10 Year Warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge (excludes shipping charges) for the original purchaser.

Please note: Any modifications to an item of any kind before contacting us will void any and all warranty coverage for this item. Please contact us before modifying the part so that we have the opportunity to correct the situation.

This part replaces:

  • Standard Motor Products SG1843
  • OE # 8946529525
  • Walker Products Inc. 250-24155

Vehicle Fit

  • Lexus RX300 Downstream O2 Oxygen Sensor
  • Lexus SC300 L6 3.0L Downstream O2 Oxygen Sensor
  • Toyota Highlander V6 3.0L Downstream O2 Oxygen Sensor
  • Toyota Rav4 Downstream O2 Oxygen Sensor
  • Toyota Supra Downstream O2 Oxygen Sensor
  • Toyota Supra Turbo Downstream O2 Oxygen Sensor

Product Reviews

5.0 / 5.0
1 Review
5 Stars
4 Stars
3 Stars
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1 Star
Nice quality, easy to install
Nice quality and nice price, no problem to install. Did the job.
September 18, 2018
1 year ago