Make sure this part fits

GMC 12585784 Piston, (W/Connect Rod)

2002-2006 GMC

Customer Questions & Expert Answers (4)
12585784 GM Piston, (W/Connect Rod) Illustration 1 of 1
  • Part Description
    PISTON, Engine Piston
  • Replaces
    88984216, 88958991, 12482717, 88984235
  • 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 Number12585784
    Part DescriptionPISTON, Engine Piston
    Other NamesPiston
    Item Dimensions11.5 x 5.0 x 4.9 inches
    Item Weight3.00 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces88984216, 88958991, 12482717, 88984235
    ManufacturerGeneral Motors
    SKU12585784
    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
    2004-2006 GMC Canyon4 Cyl 2.8L, 5 Cyl 3.5LPICKUP, PICKUP CREW CAB, PICKUP EXTENDED CAB, PICKUP EXTENDED LENGTH
    2002-2005 GMC Envoy6 Cyl 4.2L4 DOOR, 4 Door XL, 4 DOOR XUV
  • 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 12585784 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What should be done if the oil clearance for the Piston is not as specified for the 2005 Chevrolet Trailblazer? Posted by Susana B.
    A:
    Verify cleanliness and journal diameter before considering replacement. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Mar 01, 2025
    Q:
    How do you remove the connecting rod/Piston assembly for the 2004 Chevrolet Colorado? Posted by Gayle K.
    A:
    Push the assembly out through the top of the engine, using a wooden or plastic hammer handle if needed, and repeat for the remaining cylinders. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Mar 18, 2022
    Q:
    Please, can you confirm this part number will includes connecting rod and piston rings? Posted by Usamybox S. / 2004 Light Truck Trailblazer / Envoy / Rainier / Bravada (2WD)
    A:
    12585784 PISTON, (W/CONN ROD) (STD) (W/CSTG 12579989) (INCLS ROD,PISTON,RINGS,RETAINER)
    Answered by GM Parts Specialist Ed / Mar 05, 2020

Genuine GM Part 12585784, the Right Choice

To ensure reliability, purchase GM part # 12585784 Piston, (W/Connect Rod). It is sometimes referred to as GMC Piston. 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 Canyon, Envoy models.

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