GM Genuine Parts Engine Piston
OE
Pack of 1

GM Genuine Parts Engine Piston

GM Part #12550059

ACDelco Part #12550059

MSRP$316.84*

GM Genuine Parts Engine Pistons are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

Pack of 1

About this product

GM Genuine Parts Engine Pistons are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Piston Pin Inside Diameter0.63 in / 15.95 mm
Piston Pin Outside Diameter1.22 in / 30.991 mm
Piston Pin Length2.76 in / 70 mm
Skirt Length3.71 in / 94.19 mm
Piston Inside Diameter3.78 in / 96 mm
Piston Outside Diameter4.09 in / 104 mm
ClassificationOE
OversizedYes
Piston Pin Incorporated BearingsNo
Skirt TypePartial
Piston Pin MaterialSteel
Piston MaterialAluminum
Piston Head TypeFlat

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

ModelBody StyleTrimYear(s)
Blazer1994
C15001994, 1995, 1996
C1500 Suburban1995, 1996, 1997, 1998, 1999
C25001992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
C2500 Suburban1994, 1995, 1996, 1997, 1998, 1999