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Chevrolet 12557282 Engine Exhaust Manifold

2001-2002 Chevrolet

Customer Questions & Expert Answers (3)
12557282 GM Engine Exhaust Manifold Illustration 1 of 1
  • Part Description
    Manifold, Exhaust ; Manifold, Engine Exhaust Manifold
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12557282
    Part DescriptionManifold, Exhaust ; Manifold, Engine Exhaust Manifold
    Other NamesExhaust Manifold, Manifold
    Item Dimensions23.2 x 8.7 x 6.1 inches
    Item Weight14.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12557282
    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
    2001-2002 Chevrolet C3500C3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5
    2001-2002 Chevrolet Express8 Cyl 8.1L1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER
  • 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 12557282 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What is the next step after removing the necessary components for the right side Exhaust Manifold for the 2001 Chevrolet Express? Posted by Carmen P.
    A:
    Bend the lock tabs back if equipped, then remove the mounting bolts and separate the exhaust manifold from the cylinder head, followed by removing the heat shields. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Julian / Mar 15, 2023
    Q:
    What should be done after the installation of the Exhaust Manifold is complete for the 2001 Chevrolet Express? Posted by Krystal K.
    A:
    The remaining installation steps are the reverse of removal, and always use new O-rings and gaskets on the EGR valve and pipe assembly. Finally, start the engine and check for exhaust leaks. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Mar 19, 2025

Genuine GM Part 12557282, the Right Choice

To ensure reliability, purchase GM part # 12557282 Engine Exhaust Manifold. It is sometimes referred to as Chevrolet Exhaust Manifold. 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 C3500, Express models.

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