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GMC 19418925 Catalytic Converter

2011-2015 GMC Sierra

Customer Questions & Expert Answers (3)
19418925 GM Catalytic Converter Illustration 1 of 1
  • Part Description
    Converter Assembly, Oxidation Catalytic With Exhaust Manifold Pipekit
  • Replaces
    22887212, 22770967, 25812363
  • Manufacturer
    General Motors
Make sure this part fits
$1530.69 MSRP: $2427.11
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Core Charge: $400.00
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number19418925
    Part DescriptionCatalytic Converter; Converter Assembly, Oxidation Catalytic With Exhaust Manifold Pipekit
    ConditionNew
    Replaces22887212, 22770967, 25812363
    ManufacturerGeneral Motors
    SKU19418925
    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
    2011-2015 GMC Sierra8 Cyl 6.6L Diesel1 TON CREW CAB, 2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 2500 LONG BOX, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5
  • 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 19418925 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What does a reduction catalyst do for the Catalytic Converter in the 2012 Chevrolet Silverado? Posted by Willy M.
    A:
    A reduction catalyst reduces oxides of nitrogen. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Apr 26, 2025
    Q:
    How can you remove the Catalytic Converter from a 2011 GMC Sierra? Posted by Sienna G.
    A:
    To remove the converter, raise the vehicle and place it securely on jackstands, disconnect the electrical connectors for the oxygen sensors, remove all four sensors, remove the nuts at each of the upper flanges securing the front exhaust pipe assembly, remove the nuts securing the rear flange of the front exhaust pipe assembly, and remove the front exhaust pipe assembly. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / Sep 14, 2025

Genuine GM Part 19418925, the Right Choice

To ensure reliability, purchase GM part # 19418925 Catalytic Converter. It is sometimes referred to as GMC 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 GMC Sierra models.

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