Specifications:

  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (16.5 Inches)
  • Upstream or Downstream Sensor as listed per applications
  • Heated
  • 4 wire configuration
  • 4 terminal configuration
  • Replaces dealer part numbers: 24577273, 12577588
  • 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.

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

2.5 / 5.0
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O2 sensors
installed and seem to be working fine. Recommend a mechanic do this job unless you have a hoist and easy standup access. remind all purchasers that these are very fine threads holding the sensors in and after 150k miles of NE winters it is a time consuming and careful install. Now chasing down a vapor system light.
September 25, 2017
Purchased
1 year ago
this sensor failed in 1 month of use
this sensor failed in less than a month of use had to replace it with autozone 56.00 dollar cheap brand dont buy this one
March 12, 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 3 answers
Is this sensor used for both upstream and downstream?
Bruce B on Aug 19, 2017
BEST ANSWER: This sensor will work exclusively for a downstream or upstream depending on your application. If you are unsure we recommend you give us a call at 888-844-3393 so we can help verify fit!

Vehicle Fit

Year Make Model Description
2006Cadillac CTS-V Cadillac CTS-V V8 6.0L Downstream O2 Oxygen Sensor
2007Cadillac Escalade Cadillac Escalade V8 6.2L Downstream O2 Oxygen Sensor
2007Cadillac Escalade ESV Cadillac Escalade ESV V8 6.2L Downstream O2 Oxygen Sensor
2007Cadillac Escalade EXT Cadillac Escalade EXT V8 6.2L Downstream O2 Oxygen Sensor
2002-2005Chevy Astro Chevy Astro Upstream O2 Oxygen Sensor Passenger Side
2002-2005Chevy Astro Chevy Astro Downstream O2 Oxygen Sensor
2007Chevy Avalanche 1500 Chevy Avalanche 1500 V8 6.0L Downstream O2 Oxygen Sensor
2007Chevy Avalanche 1500 Chevy Avalanche 1500 V8 5.3L Downstream O2 Oxygen Sensor
2006Chevy Silverado 1500 Chevy Silverado 1500 V6 4.3L Downstream O2 Oxygen Sensor
2006Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L Downstream O2 Oxygen Sensor
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 4.8L Downstream O2 Oxygen Sensor
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V6 4.3L Downstream O2 Oxygen Sensor
2007Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L Downstream O2 Oxygen Sensor
2007Chevy Suburban 1500 Chevy Suburban 1500 2500 V8 6.0L Downstream O2 Oxygen Sensor
2007Chevy Suburban 2500 Chevy Suburban 2500 V8 6.0L Downstream O2 Oxygen Sensor
2006-2007Chevy Tahoe Chevy Tahoe V8 4.8L Downstream O2 Oxygen Sensor
2002-2003Chevy Trailblazer Chevy Trailblazer L6 4.2L Upstream O2 Oxygen Sensor
2002-2003GMC Envoy GMC Envoy L6 4.2L Upstream O2 Oxygen Sensor
2002-2005GMC Safari GMC Safari Upstream O2 Oxygen Sensor Passenger Side
2002-2005GMC Safari GMC Safari Downstream O2 Oxygen Sensor
2006GMC Sierra 1500 GMC Sierra 1500 V8 4.8L Downstream O2 Oxygen Sensor
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 4.8L Downstream O2 Oxygen Sensor
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V6 4.3L Downstream O2 Oxygen Sensor
2006-2007GMC Yukon GMC Yukon V8 4.8L Downstream O2 Oxygen Sensor
2007GMC Yukon GMC Yukon V8 6.2L Downstream O2 Oxygen Sensor
2007GMC Yukon GMC Yukon V8 5.3L Downstream O2 Oxygen Sensor
2007GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L Downstream O2 Oxygen Sensor
2007GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L Downstream O2 Oxygen Sensor
2007Hummer H2 Hummer H2 Downstream O2 Oxygen Sensor
2003Isuzu Ascender Isuzu Ascender L6 4.2L Upstream O2 Oxygen Sensor
2002-2003Oldsmobile Bravada Olds Bravada L6 4.2L Upstream O2 Oxygen Sensor
2002-2003Saturn L Sedan Saturn L Sedan L4 2.2L Upstream O2 Oxygen Sensor
2002-2003Saturn L Wagon Saturn L Wagon L4 2.2L Upstream O2 Oxygen Sensor

This part replaces:

  • OE # 12570794
  • Standard Motor Products SG708
Part #: 1AEOS00071


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)