Make sure this part fits

Buick 12665890 Catalytic Converter

2019-2020 Buick Envision

Customer Questions & Expert Answers (2)
12665890 GM Catalytic Converter Illustration 1 of 1
  • Part Description
    Converter, Catalytic Converter
  • Manufacturer
    General Motors
Make sure this part fits
$1428.79 MSRP: $2264.64
You Save: $835.85 (37%)
Core Charge: $400.00
Ships in 1-3 Business Days
1
ADD TO CART
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number12665890
    Part DescriptionCatalytic Converter; Converter, Catalytic Converter
    Item Dimensions20.9 x 12.0 x 8.1 inches
    Item Weight10.90 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12665890
    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
    2019-2020 Buick Envision4 Cyl 2.0L4 DOOR PREMIUM, 4 DOOR PREMIUM 2
  • 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 12665890 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What should be done with the oxygen sensor and the Catalytic Converter during the replacement process for the 2016 Chevrolet Malibu? Posted by Invonne F.
    A:
    Disconnect the electrical connector from the related oxygen sensor and remove the sensor. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Aug 17, 2025

Genuine GM Part 12665890, the Right Choice

To ensure reliability, purchase GM part # 12665890 Catalytic Converter. It is sometimes referred to as Buick Catalytic Converter. 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 Envision models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 12665890 Catalytic Converter. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed Buick parts information, click here.
Find low prices on genuine OE parts from GM dealerships with fast delivery and dedicated service at GMPartsGiant.com.