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GM 12671758 Catalytic Converter

2014-2019 Cadillac CTS

Customer Questions & Expert Answers (2)
12671758 GM Catalytic Converter Illustration 1 of 1
  • Part Description
    Converter, Catalytic Converter
  • Replaces
    12639795, 12669579, 12662679
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12671758
    Part DescriptionCatalytic Converter; Converter, Catalytic Converter
    Item Dimensions20.6 x 8.4 x 7.7 inches
    Item Weight11.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12639795, 12669579, 12662679
    ManufacturerGeneral Motors
    SKU12671758
    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
    2014-2019 Cadillac CTS6 Cyl 3.6L4 DOOR PREMIUM SEDAN
  • 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 12671758 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What is the first step in the process for replacing the Catalytic Converter in the 2014 Cadillac CTS? Posted by Irwin B.
    A:
    Raise the front of the vehicle and support it securely on jackstands, then remove the engine under-cover. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Feb 15, 2026

Genuine GM Part 12671758, the Right Choice

To ensure reliability, purchase GM part # 12671758 Catalytic Converter. It is sometimes referred to as GM Catalytic Converter, GM Exhaust Pipe. 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 Cadillac CTS models.

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