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Chevrolet 20854458 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P

2010 Chevrolet Silverado

Customer Questions & Expert Answers (4)
GM 20854458 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
  • Part Description
    Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P
  • Replaced By
    19420110
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number20854458
    Part DescriptionConverter Assembly, 3Way Catalytic (W/ Exhaust Manifold P
    Other NamesCatalytic Converter
    Item Dimensions39.2 x 32.2 x 16.6 inches
    Item Weight34.10 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU20854458
    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 Chevrolet Silverado8 Cyl 6.2L FlexCREW CAB 1/2 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 20854458 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How can you remove the converter for the 2012 Chevrolet Silverado? Posted by Customer
    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.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    Q:
    How should you install the converter for the 2013 GMC Sierra? Posted by Customer
    A:
    To install the converter, coat the threads of the nuts and bolts with anti-seize compound, and tighten the nuts securing the front exhaust pipe assembly securely.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    Q:
    What can you do if you suspect a malfunctioning converter for the 2014 GMC Yukon? Posted by Customer
    A:
    If you suspect a malfunctioning converter, take it to a dealer or authorized emission inspection facility for diagnosis and repair.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 20854458, the Right Choice

To ensure reliability, purchase GM part # 20854458 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P. It is sometimes referred to as Chevrolet 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 Chevrolet Silverado models.

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