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Pontiac 24506407 Piston Assembly, W/ Pinion (0.5Mm Oversize)

1991-1996 Pontiac Grand Prix

Customer Questions & Expert Answers (3)
24506407 GM Piston Assembly, W/ Pinion (0.5Mm Oversize) Illustration 1 of 1
  • Part Description
    PISTON, Engine Piston
  • Replaces
    10162021, 10162020
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Pontiac
    Manufacturer Part Number24506407
    Part DescriptionPISTON, Engine Piston
    Item Dimensions4.7 x 4.4 x 4.3 inches
    Item Weight0.80 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces10162021, 10162020
    Require Quantity6
    ManufacturerGeneral Motors
    SKU24506407
    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
    1991-1996 Pontiac Grand Prix6 Cyl 3.4L2 DOOR, 4 DOOR, GT 2 DOOR, LE 2 DOOR, LE 4 DOOR, SE 2 DOOR, SE 4 DOOR, STE 4 DOOR
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you.
    A:
    You can Select Your Vehicle to check if 24506407 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    How should the connecting rods, caps, and Piston be marked for the 1996 Pontiac Grand Prix? Posted by Altice M.
    A:
    Ensure they are marked for identification, and if not, use a center-punch to create indentations. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Feb 09, 2026
    Q:
    What action should be taken if there are discrepancies in the connecting rod end-play or Piston alignment for the 1991 Pontiac Grand Prix? Posted by Alexia G.
    A:
    Address any discrepancies by resizing the rods if necessary. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Xavier / Jan 04, 2024

Genuine GM Part 24506407, the Right Choice

To ensure reliability, purchase GM part # 24506407 Piston Assembly, W/ Pinion (0.5Mm Oversize). 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 Grand Prix models.

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