This replacement oxygen sensor is just what you need to get your vehicle in good working form again!

Specifications:

  • Brand New Oxygen Sensor
  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (12.00 Inches)
  • Center or Downstream Sensor
    • as listed per application
  • 4 wire configuration
  • Replaces dealer part numbers: 12578459, 12587214, 19178747, 19178922, 19178924, 25132196, 25132207, 25161130, 25164983, 25312196, 25312207, 25318321, 25327815, 8125872140, 81258 72140, 8251649830, 82516 49830, 8253122070, 82531 22070
  • 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 run 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

4.5 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
1
1
0
0
0
Couldn't be happier with it
August 30, 2010
B1S2
Although my code read my O2 sensor needed changing, it didn't fix the problem. Looks good though, could be other things involved. I had to fix the threading to get it to thread into the pipe.
March 4, 2018
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
where is it?
Tom A on Apr 28, 2017
BEST ANSWER: This is located after the catalytic converter on the exhaust system.

Vehicle Fit

  • 1996-2004 Buick Century V6 3.1L Downstream O2 Oxygen Sensor
  • 1996 Buick Century L4 2.2L Downstream O2 Oxygen Sensor
  • 1996-2003 Buick LeSabre V6 3.8L Downstream O2 Oxygen Sensor
  • 1996-2003 Buick Park Avenue V6 3.8L Supercharged Downstream O2 Oxygen Sensor
  • 1996-2003 Buick Park Avenue V6 3.8L Downstream O2 Oxygen Sensor
  • 1996 Buick Regal V6 3.1L Downstream O2 Oxygen Sensor
  • 1996-2003 Buick Regal V6 3.8L Downstream O2 Oxygen Sensor
  • 1997-2003 Buick Regal V6 3.8L Supercharged Downstream O2 Oxygen Sensor
  • 2002-2005 Buick Rendezvous V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-1999 Buick Riviera V6 3.8L Downstream O2 Oxygen Sensor
  • 1996-1999 Buick Riviera V6 3.8L Supercharged Downstream O2 Oxygen Sensor
  • 1996-1997 Chevy Camaro V6 3.8L Center O2 Oxygen Sensor
  • 1996-1997 Chevy Camaro V8 5.7L Center O2 Oxygen Sensor
  • 1996-1997 Chevy Camaro V8 5.7L Downstream O2 Oxygen Sensor
  • 1996-1997 Chevy Camaro V6 3.8L Downstream O2 Oxygen Sensor
  • 1998-2002 Chevy Camaro V6 3.8L Downstream O2 Oxygen Sensor
  • 1998-1999 Chevy Camaro V8 5.7L Downstream O2 Oxygen Sensor Passenger Side
  • 2000 Chevy Camaro V8 5.7L Downstream O2 Oxygen Sensor
  • 2000-2004 Chevy Impala V6 3.4L Downstream O2 Oxygen Sensor
  • 2000-2003 Chevy Impala V6 3.8L Downstream O2 Oxygen Sensor
  • 1996-1997 Chevy Lumina V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-2001 Chevy Lumina V6 3.1L Downstream O2 Oxygen Sensor
  • 1998-1999 Chevy Lumina V6 3.8L Downstream O2 Oxygen Sensor
  • 1996 Chevy Lumina APV V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-1999 Chevy Monte Carlo V6 3.1L Downstream O2 Oxygen Sensor
  • 1996-1997 Chevy Monte Carlo V6 3.4L Downstream O2 Oxygen Sensor
  • 1998-2003 Chevy Monte Carlo V6 3.8L Downstream O2 Oxygen Sensor
  • 2000-2004 Chevy Monte Carlo V6 3.4L Downstream O2 Oxygen Sensor
  • 1997-2003 Chevy S10 Pickup L4 2.2L Downstream O2 Oxygen Sensor
  • 1997-2004 Chevy Venture V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-2003 GMC S-15 Sonoma L4 2.2L Downstream O2 Oxygen Sensor
  • 1997-2000 Isuzu Hombre L4 2.2L Downstream O2 Oxygen Sensor
  • 1996-1999 Olds 88 V6 3.8L Downstream O2 Oxygen Sensor
  • 1996 Olds 98 V6 3.8L Downstream O2 Oxygen Sensor
  • 1996 Olds 98-Regency V6 3.8L Downstream O2 Oxygen Sensor
  • 1996-1997 Olds Aurora V8 4.0L Center O2 Oxygen Sensor
  • 1996-1997 Olds Aurora V8 4.0L Downstream O2 Oxygen Sensor
  • 1998-1999 Olds Aurora V8 4.0L Downstream O2 Oxygen Sensor
  • 1996 Olds Cutlass Ciera L4 2.2L Downstream O2 Oxygen Sensor
  • 1996 Olds Cutlass Ciera V6 3.1L Downstream O2 Oxygen Sensor
  • 1996 Olds Cutlass Supreme V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-1997 Olds Cutlass Supreme V6 3.1L Downstream O2 Oxygen Sensor
  • 1996-1999 Olds Delta 88 V6 3.8L Downstream O2 Oxygen Sensor
  • 1996-1999 Olds LSS V6 3.8L Supercharged Downstream O2 Oxygen Sensor
  • 1996-1999 Olds LSS V6 3.8L Downstream O2 Oxygen Sensor
  • 1997-1998 Olds Regency V6 3.8L Downstream O2 Oxygen Sensor
  • 1996-2004 Olds Silhouette V6 3.4L Downstream O2 Oxygen Sensor
  • 2001-2004 Pontiac Aztek V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-2003 Pontiac Bonneville V6 3.8L Downstream O2 Oxygen Sensor
  • 1997-2003 Pontiac Bonneville V6 3.8L Supercharged Downstream O2 Oxygen Sensor
  • 1996-1997 Pontiac Firebird V8 5.7L Center O2 Oxygen Sensor
  • 1996-1997 Pontiac Firebird V6 3.8L Center O2 Oxygen Sensor
  • 1996-1997 Pontiac Firebird V6 3.8L Downstream O2 Oxygen Sensor
  • 1996-1997 Pontiac Firebird V8 5.7L Downstream O2 Oxygen Sensor
  • 1998-1999 Pontiac Firebird V8 5.7L Downstream O2 Oxygen Sensor Passenger Side
  • 1998-2002 Pontiac Firebird V6 3.8L Downstream O2 Oxygen Sensor
  • 1996 Pontiac Grand Prix V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-2003 Pontiac Grand Prix V6 3.1L Downstream O2 Oxygen Sensor
  • 1997-2003 Pontiac Grand Prix V6 3.8L Supercharged Downstream O2 Oxygen Sensor
  • 1997-2003 Pontiac Grand Prix V6 3.8L Downstream O2 Oxygen Sensor
  • 1999-2004 Pontiac Montana V6 3.4L Downstream O2 Oxygen Sensor
  • 1996-1998 Pontiac Trans Sport V6 3.4L Downstream O2 Oxygen Sensor

This part replaces:

  • Standard Motor Products SG277
Part #: 1AEOS01012

Ships Same Day for orders placed by 4 P.M. ET

How-to Video:

(03:08 min)