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.

Returns Note:

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.

  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
3 Reviews
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, arrived fast fit good works well thank you
The price of the product was very good the product fit well works good have no problems thank you very much and be looking forward to doing business with you again God bless bye
August 9, 2018
Purchased
3 weeks ago
Perfect
Pain in the assignment to change but engine lights out. Off for emmision test.
February 5, 2018
Purchased
6 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

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

This part replaces:

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


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)