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GMC 12558057 Cylinder Head Assembly With Valve

1996-2002 GMC

Customer Questions & Expert Answers (3)
12558057 GM Cylinder Head Assembly With Valve Illustration 1 of 1
  • Part Description
    Head Assembly, Cyl (W/ Valve)
  • Replaces
    12529180
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number12558057
    Part DescriptionHead Assembly, Cyl (W/ Valve)
    Other NamesCylinder Head
    Item Dimensions24.5 x 15.5 x 10.6 inches
    Item Weight45.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12529180
    Require Quantity2
    ManufacturerGeneral Motors
    SKU12558057
    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
    1996-1999 GMC C15008 Cyl 5.0LC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX
    1996-1999 GMC C25008 Cyl 5.0LC2500 CREW CAB, C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1996-1999 GMC K15008 Cyl 5.0LK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX
    1996-1999 GMC K25008 Cyl 5.0LK2500 CREW CAB, K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB
    1996-2002 GMC Savana8 Cyl 5.0L1/2 TON CARGO, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA
    1996-1999 GMC Suburban1/2 TON, 3/4 TON
    1996-1997 GMC YukonCLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON
  • 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 12558057 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What needs to be disconnected from the alternator for the 2000 Chevrolet Express, including any connections related to the Cylinder Head? Posted by Marcelino R.
    A:
    Disconnect the wiring from the back of the alternator. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Mar 23, 2024
    Q:
    Where can new and rebuilt Cylinder Heads be commonly found for the 1996 Chevrolet C1500? Posted by Julita F.
    A:
    New and rebuilt cylinder heads are commonly available at dealerships and auto parts stores. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Sep 15, 2025

Genuine GM Part 12558057, the Right Choice

To ensure reliability, purchase GM part # 12558057 Cylinder Head Assembly With Valve. It is sometimes referred to as GMC Cylinder Head. 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 C2500, Suburban, Yukon models.

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