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Vehicle Fit

AC DELCO AFS109 [HEATED OXYGEN SENSOR]

This AC DELCO Oxygen Sensor is a new part. It is the same piece that you would receive if you purchased it from your local GM dealer.

This Oxygen O2 Sensor has the following Specifications

  • Rectangular, Four pin, 4 wire connector
  • Replaces dealer part numbers: 19178958, 25164488, 25312203, AFS109
  • Direct Fit
  • Correct Connector No cutting or splicing
  • Built and tested to strict quality control standards
  • Some applications use (2) of the same Oxygen Sensors

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.

Install note:

You may be required to reset the vehicle computer after installation of this part.

Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

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 : Removing the O2 Sensor (0:37)
    • Pry out the clip and pin from the sensor
    • Disconnect the O2 sensor harness
    • Cut off the harness connector and sensor with wire cutters
    • Remove the O2 sensor wire with a 7/8 wrench
  2. step : Installing the New O2 Sensor (2:20)
    • Twist on the O2 sensor to the exhaust pipe
    • Tighten the O2 sensor with a 7/8 wrench
    • Reconnect the O2 sensor harness
    • Replace the pin and re-clip the harness to the vehicle

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Wire Cutters

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Wrenches - SAE

  • 7/8 Inch Wrench

5.00/ 5.0
1review
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Worked great.no more check engine light.running smoother and better gas milage...
August 8, 2017
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Year Make Model Description
1997-1999Buick Century Buick Century V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
2000Buick Century Buick Century V6 3.1L Upstream O2 Oxygen Sensor ACDelco AFS109
1997Buick LeSabre Buick LeSabre V6 3.8L Upstream O2 Oxygen Sensor ACDelco AFS109
1998-2002Buick LeSabre Buick LeSabre V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2003Buick Park Avenue Buick Park Avenue V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2003Buick Park Avenue Buick Park Avenue V6 3.8L (8th Vin Digit 1) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2002Buick Regal Buick Regal V6 3.8L (8th Vin Digit 1) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2002Buick Regal Buick Regal V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Buick Riviera Buick Riviera V6 3.8L (8th Vin Digit 1) Upstream O2 Oxygen Sensor ACDelco AFS109
1997Buick Riviera Buick Riviera V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997Buick Skylark Buick Skylark V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Cadillac Deville Cadillac Deville V8 4.6L Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Cadillac Deville Cadillac Deville V8 4.6L Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Cadillac Eldorado Cadillac Eldorado V8 4.6L Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Cadillac Eldorado Cadillac Eldorado V8 4.6L Upstream O2 Oxygen Sensor ACDelco AFS109
1999-2000Cadillac Escalade Cadillac Escalade V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
2002Cadillac Escalade Cadillac Escalade V8 5.3L Downstream O2 Oxygen Sensor ACDelco AFS109
2002Cadillac Escalade Cadillac Escalade V8 6.0L Downstream O2 Oxygen Sensor ACDelco AFS109
2002Cadillac Escalade EXT Cadillac Escalade EXT V8 6.0L Downstream O2 Oxygen Sensor ACDelco AFS109
1996Cadillac Seville Cadillac Seville V8 4.6L Downstream O2 Oxygen Sensor ACDelco AFS109
1996Cadillac Seville Cadillac Seville V8 4.6L Downstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Cadillac Seville Cadillac Seville V8 4.6L Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Cadillac Seville Cadillac Seville V8 4.6L Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1997Chevy Astro Chevy Astro V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
2002Chevy Avalanche 1500 Chevy Avalanche 1500 V8 5.3L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy C1500 Truck Chevy C1500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy C1500 Truck Chevy C1500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1998Chevy C1500 Truck Chevy C1500 Truck V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy C2500 Truck Chevy C2500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1998Chevy C2500 Truck Chevy C2500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy C2500 Truck Chevy C2500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
2000Chevy C2500 Truck Chevy C2500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy C3500 Truck Chevy C3500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy C3500 Truck Chevy C3500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1997-2002Chevy Camaro Chevy Camaro V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1998-2000Chevy Camaro Chevy Camaro V6 3.8L Upstream O2 Oxygen Sensor ACDelco AFS109
1996-2002Chevy Express 1500 Van Chevy Express 1500 Van V8 5.0L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002Chevy Express 1500 Van Chevy Express 1500 Van V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002Chevy Express 1500 Van Chevy Express 1500 Van V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1997-1998Chevy Express 1500 Van Chevy Express 1500 Van V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1998Chevy Express 1500 Van Chevy Express 1500 Van V8 5.0L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002Chevy Express 2500 Van Chevy Express 2500 Van V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002Chevy Express 2500 Van Chevy Express 2500 Van V8 5.0L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002Chevy Express 2500 Van Chevy Express 2500 Van V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1997-1998Chevy Express 2500 Van Chevy Express 2500 Van V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1998Chevy Express 2500 Van Chevy Express 2500 Van V8 5.0L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy Express 3500 Van Chevy Express 3500 Van V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002Chevy Express 3500 Van Chevy Express 3500 Van V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996Chevy G30 Chevy G30 V6 4.3L Downstream O2 Oxygen Sensor ACDelco AFS109
1996Chevy G30 Chevy G30 V8 5.7L Downstream O2 Oxygen Sensor ACDelco AFS109
1996Chevy G30 Chevy G30 V8 7.4L Downstream O2 Oxygen Sensor ACDelco AFS109
2000Chevy Impala Chevy Impala V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
2000-2003Chevy Impala Chevy Impala V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy K1500 Truck Chevy K1500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy K1500 Truck Chevy K1500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1998Chevy K1500 Truck Chevy K1500 Truck V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy K2500 Truck Chevy K2500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy K2500 Truck Chevy K2500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1998Chevy K2500 Truck Chevy K2500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy K3500 Truck Chevy K3500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy K3500 Truck Chevy K3500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1997Chevy Lumina Chevy Lumina V6 3.4L Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Chevy Lumina Chevy Lumina V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1998-1999Chevy Lumina Chevy Lumina V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
2000-2001Chevy Lumina Chevy Lumina V6 3.1L Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Chevy Malibu Chevy Malibu V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1999-2000Chevy Malibu Chevy Malibu V6 3.1L Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Chevy Monte Carlo Chevy Monte Carlo V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1997Chevy Monte Carlo Chevy Monte Carlo V6 3.4L Upstream O2 Oxygen Sensor ACDelco AFS109
1998-2003Chevy Monte Carlo Chevy Monte Carlo V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
2000Chevy Monte Carlo Chevy Monte Carlo V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1997Chevy P30 Chevy P30 V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy P30 Chevy P30 V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy P30 Chevy P30 V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996Chevy P30 Chevy P30 V8 5.7L (8th Vin Digit K) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1997Chevy P30 Chevy P30 V8 7.4L (8th Vin Digit N) Downstream O2 Oxygen Sensor ACDelco AFS109
1998-1999Chevy P30 Chevy P30 V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1998-1999Chevy P30 Chevy P30 V8 7.4L Downstream O2 Oxygen Sensor ACDelco AFS109
1999-2002Chevy Silverado 1500 Chevy Silverado 1500 V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1999Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L Downstream O2 Oxygen Sensor ACDelco AFS109
1999Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2002Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2002Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L Downstream O2 Oxygen Sensor ACDelco AFS109
2001Chevy Silverado 1500 Chevy Silverado 1500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2002Chevy Silverado 1500 Chevy Silverado 1500 V6 4.3L Downstream O2 Oxygen Sensor ACDelco AFS109
2002Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (Canada Built Models (1st VIN Digit 2)) Downstream O2 Oxygen Sensor ACDelco AFS109
2001Chevy Silverado 1500 HD Chevy Silverado 1500 HD V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
1999Chevy Silverado 2500 Chevy Silverado 2500 V8 5.3L Downstream O2 Oxygen Sensor ACDelco AFS109
2000Chevy Silverado 2500 Chevy Silverado 2500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2001Chevy Silverado 2500 Chevy Silverado 2500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001Chevy Silverado 2500 Chevy Silverado 2500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001Chevy Silverado 3500 Chevy Silverado 3500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2000-2002Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2002Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2001Chevy Suburban 2500 Chevy Suburban 2500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
1996-1999Chevy Suburban C1500 Chevy Suburban C1500 V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy Suburban C2500 Chevy Suburban C2500 V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy Suburban C2500 Chevy Suburban C2500 V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy Suburban K1500 Chevy Suburban K1500 V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy Suburban K2500 Chevy Suburban K2500 V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Chevy Suburban K2500 Chevy Suburban K2500 V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000Chevy Tahoe Chevy Tahoe V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2002Chevy Tahoe Chevy Tahoe V8 4.8L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2002Chevy Tahoe Chevy Tahoe V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2002Chevy Tahoe Chevy Tahoe V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
1997-2000Chevy Venture Chevy Venture V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1998GMC C1500 Truck GMC C1500 Truck V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC C1500 Truck GMC C1500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC C1500 Truck GMC C1500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC C2500 Truck GMC C2500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC C2500 Truck GMC C2500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1998GMC C2500 Truck GMC C2500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC C3500 Truck GMC C3500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC C3500 Truck GMC C3500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996GMC G3500 GMC G3500 V8 7.4L Downstream O2 Oxygen Sensor ACDelco AFS109
1996GMC G3500 GMC G3500 V8 5.7L Downstream O2 Oxygen Sensor ACDelco AFS109
1996GMC G3500 GMC G3500 V6 4.3L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1998GMC K1500 Truck GMC K1500 Truck V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC K1500 Truck GMC K1500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC K1500 Truck GMC K1500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1998GMC K2500 Truck GMC K2500 Truck V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC K2500 Truck GMC K2500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC K2500 Truck GMC K2500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC K3500 Truck GMC K3500 Truck V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC K3500 Truck GMC K3500 Truck V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC P3500 GMC P3500 V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC P3500 GMC P3500 V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996GMC P3500 GMC P3500 V8 5.7L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1997GMC P3500 GMC P3500 V8 7.4L Downstream O2 Oxygen Sensor ACDelco AFS109
1998-1999GMC P3500 GMC P3500 V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1998-1999GMC P3500 GMC P3500 V8 7.4L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1997GMC Safari GMC Safari V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002GMC Savana 1500 Van GMC Savana 1500 Van V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002GMC Savana 1500 Van GMC Savana 1500 Van V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002GMC Savana 1500 Van GMC Savana 1500 Van V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002GMC Savana 2500 Van GMC Savana 2500 Van V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002GMC Savana 2500 Van GMC Savana 2500 Van V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002GMC Savana 2500 Van GMC Savana 2500 Van V8 5.0L (8th Vin Digit M) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2002GMC Savana 3500 Van GMC Savana 3500 Van V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-2000GMC Savana 3500 Van GMC Savana 3500 Van V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1997GMC Savana 3500 Van GMC Savana 3500 Van V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1999-2002GMC Sierra 1500 GMC Sierra 1500 V6 4.3L (8th Vin Digit W) Downstream O2 Oxygen Sensor ACDelco AFS109
1999GMC Sierra 1500 GMC Sierra 1500 V8 4.8L Downstream O2 Oxygen Sensor ACDelco AFS109
1999GMC Sierra 1500 GMC Sierra 1500 V8 5.3L Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2002GMC Sierra 1500 GMC Sierra 1500 V8 4.8L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2001GMC Sierra 1500 GMC Sierra 1500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001GMC Sierra 1500 GMC Sierra 1500 C3 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2002GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2002GMC Sierra 1500 GMC Sierra 1500 V6 4.3L Downstream O2 Oxygen Sensor ACDelco AFS109
2001GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001GMC Sierra 1500 HD GMC Sierra 1500 HD C3 V8 6.0L Downstream O2 Oxygen Sensor ACDelco AFS109
1999GMC Sierra 2500 GMC Sierra 2500 V8 5.3L Downstream O2 Oxygen Sensor ACDelco AFS109
2000GMC Sierra 2500 GMC Sierra 2500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2000GMC Sierra 2500 GMC Sierra 2500 V8 6.0L Upstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001GMC Sierra 2500 GMC Sierra 2500 V8 6.0L Downstream O2 Oxygen Sensor ACDelco AFS109
2001GMC Sierra 2500 GMC Sierra 2500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L Downstream O2 Oxygen Sensor ACDelco AFS109
2001GMC Sierra 3500 GMC Sierra 3500 V8 6.0L Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC Suburban C1500 GMC Suburban C1500 V8 5.7L Automatic Transmission Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC Suburban C2500 GMC Suburban C2500 V8 5.7L Automatic Transmission Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC Suburban C2500 GMC Suburban C2500 V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC Suburban K2500 GMC Suburban K2500 V8 5.7L Automatic Transmission Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC Suburban K2500 GMC Suburban K2500 V8 7.4L (8th Vin Digit J) Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC Yukon GMC Yukon V8 5.7L with 4L80E 4 Speed Automatic Transmission Downstream O2 Oxygen Sensor ACDelco AFS109
1996-1999GMC Yukon GMC Yukon V8 5.7L with 4L60E 4 Speed Automatic Transmission Downstream O2 Oxygen Sensor ACDelco AFS109
2000GMC Yukon GMC Yukon V8 5.7L (8th Vin Digit R) Downstream O2 Oxygen Sensor ACDelco AFS109
2000GMC Yukon GMC Yukon V8 4.8L Downstream O2 Oxygen Sensor ACDelco AFS109
2001GMC Yukon GMC Yukon V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
2001-2002GMC Yukon GMC Yukon V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2001-2002GMC Yukon GMC Yukon V8 4.8L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2002GMC Yukon GMC Yukon V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2002GMC Yukon GMC Yukon V8 6.0L Downstream O2 Oxygen Sensor ACDelco AFS109
2001-2002GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2002GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (US Built Models) Downstream O2 Oxygen Sensor ACDelco AFS109
2000-2001GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L Downstream O2 Oxygen Sensor Passenger Side ACDelco AFS109
1997-1999Oldsmobile 88 Olds 88 V6 3.8L Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1998Oldsmobile Achieva Olds Achieva V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1999-2001Oldsmobile Alero Olds Alero V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
1996-1999Oldsmobile Aurora Olds Aurora V8 4.0L Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Oldsmobile Cutlass Olds Cutlass V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1999Oldsmobile Cutlass Olds Cutlass V6 3.1L Upstream O2 Oxygen Sensor ACDelco AFS109
1997Oldsmobile Cutlass Supreme FWD Olds Cutlass Supreme V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1998Oldsmobile Intrigue Olds Intrigue V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1999Oldsmobile Intrigue Olds Intrigue V6 3.5L Upstream O2 Oxygen Sensor ACDelco AFS109
1999Oldsmobile Intrigue Olds Intrigue V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Oldsmobile LSS Olds LSS V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Oldsmobile LSS Olds LSS V6 3.8L (8th Vin Digit 1) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1998Oldsmobile Regency Olds Regency V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2000Oldsmobile Silhouette Olds Silhouette V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
2001-2002Oldsmobile Silhouette Olds Silhouette V6 3.4L Automatic Transmission (excluding California Emissions) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2003Pontiac Bonneville Pontiac Bonneville V6 3.8L Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2002Pontiac Firebird Pontiac Firebird V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1998Pontiac Grand Am Pontiac Grand Am V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
1999-2000Pontiac Grand Am Pontiac Grand Am V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2003Pontiac Grand Prix Pontiac Grand Prix V6 3.8L (8th Vin Digit K) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-2003Pontiac Grand Prix Pontiac Grand Prix V6 3.8L (8th Vin Digit 1) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1999Pontiac Grand Prix Pontiac Grand Prix V6 3.1L (8th Vin Digit M) Upstream O2 Oxygen Sensor ACDelco AFS109
2000Pontiac Grand Prix Pontiac Grand Prix V6 3.1L Upstream O2 Oxygen Sensor ACDelco AFS109
1999-2000Pontiac Montana Pontiac Montana V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
1997-1998Pontiac Trans Sport Pontiac Trans Sport V6 3.4L (8th Vin Digit E) Upstream O2 Oxygen Sensor ACDelco AFS109
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Part #: 1AACD00051


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AC DELCO
Brand #: AFS109

How-to Video:

(03:02 min)