Make sure this part fits

Buick 12538684 Ring Kit, Piston (0.5Mm Oversize)

1996-1999 Buick

Customer Questions & Expert Answers (3)
12538684 GM Ring Kit, Piston (0.5Mm Oversize) Illustration 1 of 1
  • Part Description
    RING KIT, 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 Buick
    Manufacturer Part Number12538684
    Part DescriptionRING KIT, Engine Piston
    Other NamesPiston Ring
    Item Dimensions5.1 x 5.1 x 0.5 inches
    Item Weight0.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Require Quantity6
    ManufacturerGeneral Motors
    SKU12538684
    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 Buick Century6 Cyl 3.1LCUSTOM, GS, LIMITED, LS, REGAL, SPECIAL, SPECIAL STATION WAGON
    1996-1999 Buick Regal6 Cyl 3.1L2 DOOR, 4 DOOR, CUSTOM, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GRAN SPORT 4 DOOR, GS, LIMITED, LIMITED 4 DOOR, LS, REGAL
    1996-1998 Buick Skylark6 Cyl 3.1L2 DOOR, 4 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 12538684 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What is the first step before installing the new Piston Rings for the 1996 Chevrolet Beretta? Posted by Waldir T.
    A:
    It is important to check the ring end gaps. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Nov 24, 2025
    Q:
    What should be done after checking and correcting the end gaps for the Piston Ring in the 1998 Pontiac Grand Prix? Posted by Alves S.
    A:
    Once the end gaps are checked and corrected, install the rings on the pistons, starting with the oil control ring, which consists of three components. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Raul / Aug 26, 2023

Genuine GM Part 12538684, the Right Choice

To ensure reliability, purchase GM part # 12538684 Ring Kit, Piston (0.5Mm Oversize). It is sometimes referred to as Buick Piston Ring. 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 Buick Century, Regal, Skylark models.

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