1981 GMC C3500

1981 GMC C3500 Oxygen Sensor

Your 1981 GMC C3500 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Oxygen Sensor product you desperately need.

We currently carry 1 Oxygen Sensor products to choose from for your 1981 GMC C3500, and our inventory prices range from as little as $23.49 up to $23.49.

On top of low prices, Advance Auto Parts offers 1 different trusted brands of Oxygen Sensor products for the 1981 GMC C3500. We only sell parts from trusted brands like GM Genuine Parts so that you can find quality parts you can count on.

Don’t take our word for it - check out customer ratings and reviews to buy with confidence. We have 5 reviews on our Oxygen Sensor products for the 1981 GMC C3500 from previous customers.

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Oxygen Sensor for Your 1981 GMC C3500

Search through our amazing selection of Oxygen Sensor products for your 1981 GMC C3500 to find exactly what you’re looking for. Compare prices and reviews to choose the best part for you.

  • Oxygen Sensor

    GM Genuine Parts - Oxygen Sensor (Part No. AFS21)

    Description
    GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle's exhaust system and measure the proportion of oxygen in exhaust gases. Using this measurement, the engine control module (ECM) can adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

    Product Features:
    • Detects oxygen content in the exhaust gases to help optimize emissions
    • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
    • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
    • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
    • GM regularly updates production and service part designs to integrate new materials and technologies
    4.0
    Read 3 review(s)

    Review snapshot ® by PowerReviews

    4.0
    4.0
    • 5
      5
      2022-01-14
      5
      5

      Poor gas mileage

      Poor gas mileage

      Submitted 2022-01-14

      By Dave

      From ALABAMA

      Perfect fit for my 1995 Chevy s10 2.2l LS. I noticed my gas mileage had been dropping down, way down to 19 mpg. Mind you this did not happen all at once. It took place over a few months period for me. You see I don't drive the little truck very much (10,000 miles a year or so.) I figured it was due a tune up so I started replacing things like spark plugs, plug wires,ignition coils, fuel filter, EGR Valve as some of these parts were factory originals. I bought the truck new in 1995. It now has 344,00 miles on it. I would check my mpg in between adding the different parts but to no avail until I changed out the oxygen sensor. VIOLA!!!!. Yes it was the Factory Original. Be sure to use a thread chaser before installing the new oxygen sensor. As of now I'm getting 27 mpg. Before changing out all the parts and the mpg starting dropping, I was getting about 24.5 mpg. Crazy thing is it never threw a code. No check engine light or anything. Fired right up, idle like a top, never had a misfire. I hope this helps someone else who may be scratching their head wondering what could it be. Best of LUCK.

      Bottom Line recommended

      Perfect fit for my 1995 Chevy s10 2.2l LS. I noticed my gas mileage had been dropping down, way down to 19 mpg. Mind you this did not happen all at once. It took place over a few months period for me. You see I don't drive the little truck very much (10,000 miles a year or so.) I figured it was due a tune up so I started replacing things like spark plugs, plug wires,ignition coils, fuel filter, EGR Valve as some of these parts were factory originals. I bought the truck new in 1995. It now has 344,00 miles on it. I would check my mpg in between adding the different parts but to no avail until I changed out the oxygen sensor. VIOLA!!!!. Yes it was the Factory Original. Be sure to use a thread chaser before installing the new oxygen sensor. As of now I'm getting 27 mpg. Before changing out all the parts and the mpg starting dropping, I was getting about 24.5 mpg. Crazy thing is it never threw a code. No check engine light or anything. Fired right up, idle like a top, never had a misfire. I hope this helps someone else who may be scratching their head wondering what could it be. Best of LUCK.

      By Dave from ALABAMA

      BOTTOM LINE recommended

    • 5
      5
      2022-01-14
      5
      5

      Poor gas mileage

      Poor gas mileage

      Submitted 2022-01-14

      By Dave

      From ALABAMA

      Changed it out and my mpg went from 21 to 27. 1995 s10 2.2l. It never threw a code. Always fired right up. No misfires.

      Bottom Line recommended

      Changed it out and my mpg went from 21 to 27. 1995 s10 2.2l. It never threw a code. Always fired right up. No misfires.

      By Dave from ALABAMA

      BOTTOM LINE recommended

    • 5
      5
      2021-08-03
      5
      5

      I would buy again.

      I would buy again.

      Submitted 2021-08-03

      By Mike

      From Undisclosed

      Good product for my truck.

      Bottom Line NULL

      Good product for my truck.

      By Mike from Undisclosed

      BOTTOM LINE NULL

    from $23.49

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