Make sure this part fits

Pontiac 12591087 Piston

2002-2008 Pontiac

Customer Questions & Expert Answers (3)
12591087 GM Piston Illustration 1 of 1
  • Part Description
    Piston, Engine Piston
  • Replaces
    12572796, 12608528
  • Manufacturer
    General Motors
Make sure this part fits
$100.71 MSRP: $155.96
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Pontiac
    Manufacturer Part Number12591087
    Part DescriptionPiston; Piston, Engine Piston
    Item Dimensions7.1 x 4.4 x 4.3 inches
    Item Weight0.90 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12572796, 12608528
    ManufacturerGeneral Motors
    SKU12591087
    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
    2007-2008 Pontiac G54 Cyl 2.2L2 DOOR, 4 DOOR, GT 2 DOOR, GT 4 DOOR, LS 2 DOOR, LS 4 DOOR, SPORT 2 DOOR, SPORT 4 DOOR
    2002-2005 Pontiac Grand Am4 Cyl 2.2LGT 2 DOOR, GT 2 DOOR COUPE, GT 4 DOOR, GT1 2 DOOR, GT1 2 DOOR COUPE, GT1 4 DOOR, SE 2 DOOR, SE 4 DOOR, SE 4 DOOR SEDAN, SE1 2 DOOR, SE1 4 DOOR
    2005-2006 Pontiac Pursuit4 Cyl 2.2L2 DOOR, 4 DOOR, LEVEL 4 PERFORMANCE (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR, LEVEL ONE (LS) 2 DOOR, LEVEL ONE (LS) 4 DOOR, LEVEL THREE (SS) 2 DOOR, LEVEL THREE (SS) 4 DOOR, LEVEL TWO (LT) 2 DOOR, LEVEL TWO (LT) 4 DOOR
    2002-2005 Pontiac Sunfire4 Cyl 2.2L2 DOOR, 4 DOOR, GT 2 DOOR
  • 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 12591087 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How should you prepare the bearing surfaces of the connecting rod and cap for the Piston in the 2005 Saturn ION? Posted by Kaitlyn W.
    A:
    You should clean the bearing surfaces of the connecting rod and cap. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Dec 02, 2025
    Q:
    How should you prepare the bearing surfaces of the connecting rod and cap for the Piston in the 2006 Chevrolet Cobalt? Posted by Shadi D.
    A:
    You should clean the bearing surfaces of the connecting rod and cap. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Feb 13, 2024

Genuine GM Part 12591087, the Right Choice

To ensure reliability, purchase GM part # 12591087 Piston. It is sometimes referred to as Pontiac 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 Pontiac G5, Grand Am, Pursuit models.

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