GM Genuine Parts Engine Piston
OE
Pack of 1

GM Genuine Parts Engine Piston

GM Part #25198520

ACDelco Part #25198520

MSRP$99.91*

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

Ring MaterialSteel
Ring Outside Diameter2.853 in / 72.47 mm
Piston Outside Diameter2.854 in / 72.5 mm
Piston Pin Inside Diameter0.394 in / 10 mm
Piston Pin Outside Diameter0.709 in / 18 mm
Skirt Length1.497 in / 38.03 mm
Piston Pin Length1.890 in / 48.01 mm
Ring Inside Diameter2.618 in / 66.5 mm
Piston Inside Diameter2.677 in / 68 mm
Top Compression Ring Thickness0.047 in / 1.2 mm
Oil Ring Thickness0.018 in / 0.46 mm
Second Compression Ring Thickness0.047 in / 1.19 mm
ClassificationOE
Oil Spacer Ring Thickness0.034 in / 0.86 mm
Piston Pin MaterialSteel
Piston Pin Incorporated BearingsNo
Piston MaterialAluminum
Assembly Lubricant IncludedNo
Piston Head TypeBowl
OversizedNo
Skirt TypeFull

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)
EncoreBase2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021