Specifications:

  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (14.4 Inches)
  • Upstream or Downstream Sensor as listed per applications
  • Heated
  • 4 wire configuration
  • 4 terminal configuration
  • Replaces dealer part numbers: 12572705
  • 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

5.0 / 5.0
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O2 Sensor
I installed the O2 sensor I ordered from A1 Auto and evrerything was perfect. The plug was an exact fit and it came with anti seize already on the threads. Best of all it got rid of my engine code.
August 6, 2018
Purchased
4 weeks ago
Awesome
Excellent price and self help video, 5 star stellar.
April 22, 2017
Purchased
1 year ago
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Vehicle Fit

Year Make Model Description
2003-2006Cadillac Escalade Cadillac Escalade V8 6.0L Upstream O2 Oxygen Sensor
2003-2006Cadillac Escalade ESV Cadillac Escalade ESV V8 6.0L Upstream O2 Oxygen Sensor
2003-2006Cadillac Escalade EXT Cadillac Escalade EXT V8 6.0L Upstream O2 Oxygen Sensor
2003-2006Chevy Avalanche 2500 Chevy Avalanche 2500 V8 8.1L Upstream O2 Oxygen Sensor
2003-2006Chevy Silverado 1500 Chevy Silverado 1500 V8 6.0L Upstream O2 Oxygen Sensor
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 6.0L Upstream O2 Oxygen Sensor
2003Chevy Silverado 1500 HD Chevy Silverado 1500 HD V8 6.0L Upstream O2 Oxygen Sensor
2005-2006Chevy Silverado 1500 HD Chevy Silverado 1500 HD Upstream O2 Oxygen Sensor
2007Chevy Silverado 1500 HD Classic Chevy Silverado 1500 HD Classic Upstream O2 Oxygen Sensor
2003-2004Chevy Silverado 2500 Chevy Silverado 2500 Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2009Chevy Silverado 2500 HD Chevy Silverado 2500 HD Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2003-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 8.1L Upstream O2 Oxygen Sensor
2010Chevy Silverado 2500 HD Chevy Silverado 2500 HD Cab & Chassis V8 6.0L (excluding Flex Fuel) Upstream O2 Oxygen Sensor
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic V8 8.1L Upstream O2 Oxygen Sensor
2003-2009Chevy Silverado 3500 Chevy Silverado 3500 Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2006Chevy Silverado 3500 Chevy Silverado 3500 V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2003-2006Chevy Silverado 3500 Chevy Silverado 3500 V8 8.1L Upstream O2 Oxygen Sensor
2010Chevy Silverado 3500 Chevy Silverado 3500 Cab & Chassis V8 6.0L (excluding Flex Fuel) Upstream O2 Oxygen Sensor
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic V8 8.1L Upstream O2 Oxygen Sensor
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2006Chevy Suburban 2500 Chevy Suburban 2500 V8 6.0L Upstream O2 Oxygen Sensor
2003-2006Chevy Suburban 2500 Chevy Suburban 2500 V8 8.1L Upstream O2 Oxygen Sensor
2003-2006Chevy Suburban 2500 Chevy Suburban 2500 V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2003-2006GMC Sierra 1500 GMC Sierra 1500 V8 6.0L Upstream O2 Oxygen Sensor
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 6.0L Upstream O2 Oxygen Sensor
2003GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L Upstream O2 Oxygen Sensor
2005-2006GMC Sierra 1500 HD GMC Sierra 1500 HD Upstream O2 Oxygen Sensor
2007GMC Sierra 1500 HD Classic GMC Sierra 1500 HD Classic Upstream O2 Oxygen Sensor
2003-2004GMC Sierra 2500 GMC Sierra 2500 Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2009GMC Sierra 2500 HD GMC Sierra 2500 HD Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2006GMC Sierra 2500 HD GMC Sierra 2500 HD V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2003-2006GMC Sierra 2500 HD GMC Sierra 2500 HD V8 8.1L Upstream O2 Oxygen Sensor
2010GMC Sierra 2500 HD GMC Sierra 2500 HD Cab & Chassis V8 6.0L (excluding Flex Fuel) Upstream O2 Oxygen Sensor
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic V8 8.1L Upstream O2 Oxygen Sensor
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2009GMC Sierra 3500 GMC Sierra 3500 Cab & Chassis V8 6.0L Upstream O2 Oxygen Sensor
2003-2006GMC Sierra 3500 GMC Sierra 3500 V8 8.1L Upstream O2 Oxygen Sensor
2003-2006GMC Sierra 3500 GMC Sierra 3500 V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2010GMC Sierra 3500 GMC Sierra 3500 Cab & Chassis V8 6.0L (excluding Flex Fuel) Upstream O2 Oxygen Sensor
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic V8 8.1L Upstream O2 Oxygen Sensor
2003-2006GMC Yukon GMC Yukon V8 6.0L Upstream O2 Oxygen Sensor
2003-2006GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L Upstream O2 Oxygen Sensor
2003-2006GMC Yukon XL 2500 GMC Yukon XL 2500 V8 8.1L Upstream O2 Oxygen Sensor
2003-2006GMC Yukon XL 2500 GMC Yukon XL 2500 V8 8.1L Downstream O2 Oxygen Sensor Passenger Side
2003-2006Hummer H2 Hummer H2 V8 6.0L Upstream O2 Oxygen Sensor

This part replaces:

  • OE # 12572705
  • Standard Motor Products SG1066
Part #: 1AEOS00072


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)