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Buick 12616502 Oxygen Sensor

2010-2017 Buick

Customer Questions & Expert Answers (4)
12616502 GM Oxygen Sensor Product Photo 1 of 4
  • Part Description
    Sensor, Computer Control Sensor
  • Replaces
    12617648
  • Manufacturer
    General Motors
Make sure this part fits
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number12616502
    Part DescriptionOxygen Sensor; Sensor, Computer Control Sensor
    Item Dimensions8.4 x 3.1 x 3.2 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12617648
    ManufacturerGeneral Motors
    SKU12616502
    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
    2010-2015 Buick Allure4 Cyl 2.4LCX 4 DOOR SEDAN, CXL 4 DOOR SEDAN
    2010-2016 Buick LaCrosse4 Cyl 2.4LCX 4 DOOR SEDAN, CXL 4 DOOR SEDAN
    2011-2017 Buick Regal4 Cyl 2.0L, 4 Cyl 2.4LCX 4 DOOR SEDAN, CXL 4 DOOR SEDAN, CXL TURBO 4 DOOR SEDAN, CXS 4 DOOR SEDAN
    2012-2017 Buick Verano4 Cyl 2.0L, 4 Cyl 2.4LCX 4 DOOR NOTCHBACK, CXL 4 DOOR NOTCHBACK
  • 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 12616502 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    Where can the Oxygen Sensors be found in 2.5L engines for the 2013 Chevrolet Malibu? Posted by Renata H.
    A:
    In 2.5L engines, the upstream sensor is in the exhaust manifold, and the downstream sensor is located below the catalytic converter. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / Jun 01, 2025
    Q:
    What is the primary function of an Oxygen Sensor in the 2009 Pontiac G6? Posted by Terri O.
    A:
    An oxygen sensor functions as a galvanic battery that generates a small voltage output based on the oxygen levels in exhaust gases. This provides essential input for the feedback loop with the Powertrain Control Module (PCM) to maintain the ideal air/fuel ratio of 14.7:1 for optimal catalytic converter performance. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Raul / Sep 23, 2023
    Q:
    Regarding Oxygen (O2) Sensor ordering. Am I correct in interpreting: Position 1 = Upstream position 2 = Downstream? Posted by Bruce T. / 2011 Chevrolet Malibu
    A:
    YES
    Answered by GM Parts Specialist Raul / Jan 10, 2023

Genuine GM Part 12616502, the Right Choice

To ensure reliability, purchase GM part # 12616502 Oxygen Sensor. It is sometimes referred to as Buick 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 Buick Allure, LaCrosse, Regal models.

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