This Oxygen O2 Sensor is a new, aftermarket replacement part that has the following specifications:

  • Four pin, 4 wire configuration
  • 2 Bolt flange style sensor
  • Correct wire length (13.77 Inches)
  • Upstream & Downstream Sensor as listed per applications
    • May be used in more then one position
  • Replaces dealer part numbers: 8946509040, 8946509110, 8946509170, 8946509180, 8946509320, 8946539655, 8946539735, 8946539835, 8946539855, 8946569175, 8946580011, 8946580034
  • Direct Fit
  • Correct Connector No cutting or splicing
  • 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

A direct replacement. If you have a bad O2 sensor causing your vehicle to idle poorly or fail an emission test then this is the part for you.

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

5.0 / 5.0
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Perfect
Pain in the assignment to change but engine lights out. Off for emmision test.
February 5, 2018
Purchased
5 months ago
Purchasing Oxygen sensors
1A stands behind their products. The service is fast and the Customer Service is excellent. 5 stars!
January 25, 2017
Purchased
1 year ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 1 answer
Will this fit upstream 98 tacoma with manual transmission?
Donnie S on Nov 30, 2016
BEST ANSWER: no

Vehicle Fit

  • 1998-2005 Lexus LX470 Downstream O2 Oxygen Sensor
  • 1994 Toyota 4Runner V6 3.0L California Emissions Downstream O2 Oxygen Sensor
  • 1995 Toyota 4Runner V6 3.0L California Emissions (Built Before 10/31/95 Production Date) Downstream O2 Oxygen Sensor
  • 1996-2000 Toyota 4Runner L4 2.7L (excluding California Emissions) Upstream O2 Oxygen Sensor
  • 1996-2000 Toyota 4Runner V6 3.4L (excluding California Emissions) Upstream O2 Oxygen Sensor
  • 1996 Toyota 4Runner L4 2.7L 4 Wheel Drive Manual Transmission (Built After 11/95 Production Date) Downstream O2 Oxygen Sensor
  • 1996 Toyota 4Runner V6 3.4L 4 Wheel Drive (Built After 11/95 Production Date) Downstream O2 Oxygen Sensor
  • 1997-2000 Toyota 4Runner V6 3.4L 4 Wheel Drive Downstream O2 Oxygen Sensor
  • 1997-2000 Toyota 4Runner L4 2.7L 4 Wheel Drive Manual Transmission Downstream O2 Oxygen Sensor
  • 1998 Toyota Land Cruiser (Built After 1/98 Production Date) Downstream O2 Oxygen Sensor
  • 1999-2004 Toyota Land Cruiser Downstream O2 Oxygen Sensor
  • 1993-1995 Toyota Pickup with 6 Foot Bed L4 2.4L 4 Wheel Drive California Emissions (US Built Models) Downstream O2 Oxygen Sensor
  • 1993-1995 Toyota Pickup L4 2.4L 2 Wheel Drive California Emissions (US Built Models) Downstream O2 Oxygen Sensor
  • 1995 Toyota Pickup V6 3.0L California Emissions Downstream O2 Oxygen Sensor
  • 2001-2003 Toyota Sequoia Downstream O2 Oxygen Sensor
  • 2004 Toyota Sequoia (Built Before 8/04 Production Date) Downstream O2 Oxygen Sensor
  • 1994-1998 Toyota T100 L4 2.7L Downstream O2 Oxygen Sensor
  • 1994 Toyota T100 V6 3.4L (Built After 8/94 Production Date) Upstream O2 Oxygen Sensor
  • 1994-1998 Toyota T100 L4 2.7L Automatic Transmission Upstream O2 Oxygen Sensor
  • 1995-1996 Toyota T100 V6 3.4L Automatic Transmission Upstream O2 Oxygen Sensor
  • 1997-1998 Toyota T100 V6 3.4L Upstream O2 Oxygen Sensor
  • 1995-2000 Toyota Tacoma L4 2.4L Automatic Transmission Downstream O2 Oxygen Sensor
  • 1995-1998 Toyota Tacoma V6 3.4L Downstream O2 Oxygen Sensor
  • 1995-2000 Toyota Tacoma L4 2.7L Downstream O2 Oxygen Sensor
  • 1995-2000 Toyota Tacoma L4 2.4L Upstream O2 Oxygen Sensor
  • 1995-2000 Toyota Tacoma L4 2.7L Upstream O2 Oxygen Sensor
  • 1999-2000 Toyota Tacoma V6 3.4L (excluding California Emissions) Downstream O2 Oxygen Sensor
  • 2000 Toyota Tundra V6 3.4L (excluding California Emissions) (Built Before 8/00 Production Date) Upstream O2 Oxygen Sensor
  • 2000-2004 Toyota Tundra V8 4.7L Downstream O2 Oxygen Sensor
  • 2000-2004 Toyota Tundra V6 3.4L Downstream O2 Oxygen Sensor

This part replaces:

  • OE # 8946509110
  • Standard Motor Products SG1839
Part #: 1AEOS00014

How-to Video:

(03:08 min)