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Chevrolet 12567254 Oxygen Sensor

2003-2005 Chevrolet

Customer Questions & Expert Answers (4)
12567254 GM Oxygen Sensor Illustration 1 of 1
  • Part Description
    Sensor, Computer Control Sensor
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12567254
    Part DescriptionOxygen Sensor; Sensor, Computer Control Sensor
    Item Dimensions8.3 x 3.3 x 3.4 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12567254
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2003-2005 Chevrolet Blazer6 Cyl 4.3L2 DOOR, 4 DOOR
    2003-2004 Chevrolet S106 Cyl 4.3LCREW CAB, PICKUP, PICKUP EXTENDED CAB
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12567254 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What does the manifold absolute pressure (MAP) sensor do, how can it be checked for the 2004 Chevrolet S10, and how does it relate to the Oxygen Sensor? Posted by Shenita P.
    A:
    The manifold absolute pressure (MAP) sensor monitors intake manifold pressure changes and varies its voltage output accordingly. To check it, you should check the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Nov 15, 2025
    Q:
    What does the manifold absolute pressure (MAP) sensor do, and how can it be checked for the 2003 GMC Sonoma, along with the Oxygen Sensor? Posted by Myke T.
    A:
    The manifold absolute pressure (MAP) sensor monitors intake manifold pressure changes and varies its voltage output accordingly. To check it, you should check the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Jul 09, 2025
    Q:
    Are they all the same for pre and post converters or are pre-a different part number then post Posted by Chad B. / 2004 Light Truck Blazer / Jimmy (4WD)
    A:
    THEY ARE ALL THE SAME PART#
    Answered by GM Parts Specialist Raul / Jul 10, 2023

Genuine GM Part 12567254, the Right Choice

To ensure reliability, purchase GM part # 12567254 Oxygen Sensor. It is sometimes referred to as Chevrolet Oxygen Sensor. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet Blazer, S10 models.

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