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    Genuine GM Parts Heated Oxygen Sensor

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    Exact Fit May Not Fit Doesn't Fit for your

    Warranty Information
    For easier removal of this item, Advance offers oxygen sensor socket wrenches to loan or purchase. See Loaner Tool page for details.
    • Product Details

      Part No. 12666673

      Warranty Details (2 YR REPLACEMENT IF DEFECTIVE)

      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:

      • This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
      • 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

    • Specifications
      • Connector Gender:Male
        Connector Shape:Oval
        Mounting Type:Position 1
        Programming Required:Yes
        Sensor Type:Heated
        Thread Diameter:0.7086614 in
        Thread Size:M18x1.5
        Universal Or Specific Fit:Specific
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