Make sure this part fits

Pontiac 89017421 Piston Asm,(W/ Pinion)(0.5 Mm Oversize)

1996-1999 Pontiac

Customer Questions & Expert Answers (3)
89017421 GM Piston Asm,(W/ Pinion)(0.5 Mm Oversize) Illustration 1 of 1
  • Part Description
    PISTON, Engine Piston
  • 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 Number89017421
    Part DescriptionPISTON, Engine Piston
    Item Dimensions5.5 x 4.5 x 5.8 inches
    Item Weight1.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Require Quantity6
    ManufacturerGeneral Motors
    SKU89017421
    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
    1996-1998 Pontiac Grand Am6 Cyl 3.1LGT 2 DOOR, GT 4 DOOR, SE 2 DOOR, SE 4 DOOR
    1996-1999 Pontiac Grand Prix6 Cyl 3.1L2 DOOR, 4 DOOR, GT 2 DOOR, GT 4 DOOR, GTP 2 DOOR, GTP 4 DOOR, SE 2 DOOR, SE 4 DOOR
  • Customer Questions & Expert Answers

    Q:
    Do these parts fit my vehicle?
    A:
    You can Select Your Vehicle to check if 89017421 fits your vehicle.
    Posted and answered by GM Parts Specialist Raul
    Q:
    What is the procedure for loosening and removing the connecting rod cap nuts for the Piston in the 1996 Chevrolet Beretta? Posted by Verified Customer
    A:
    Loosen each of the connecting rod cap nuts 1/2-turn at a time until they can be removed by hand. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Xavier / Sep 24, 2024
    Q:
    What should be ensured before beginning the installation of Piston/connecting rod assemblies for the 1996 Chevrolet Beretta? Posted by Claudine V.
    A:
    Before installation, ensure that the cylinder walls are meticulously clean, the top edges of each cylinder are chamfered, and the crankshaft is in place. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / Aug 12, 2025

Genuine GM Part 89017421, the Right Choice

To ensure reliability, purchase GM part # 89017421 Piston Asm,(W/ Pinion)(0.5 Mm 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 Am, Grand Prix models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 89017421 Piston Asm,(W/ Pinion)(0.5 Mm Oversize). You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed Pontiac parts information, click here.

Why choose GM Parts Giant

  • Dedicated Service

    Your complete satisfaction is our #1 goal

  • Lowest Prices

    Best deals on genuine OE parts from dealerships

  • Fast Delivery

    Orders are processed and delivered promptly