GM Genuine Parts Engine Piston
OE
Pack of 1

GM Genuine Parts Engine Piston

GM Part #55576442

ACDelco Part #55576442

MSRP$146.16*

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

Assembly Lubricant IncludedNo
OversizedNo
Piston MaterialAluminum
Piston Pin Incorporated BearingsNo
Skirt TypePartial
Piston Pin MaterialSteel
Piston Head TypeDome
Oil Spacer Ring Thickness0.034 in / 0.86 mm
Second Compression Ring Thickness0.047 in / 1.2 mm
Oil Ring Thickness0.076 in / 1.93 mm
Piston Pin Outside Diameter0.748 in / 19 mm
Piston Inside Diameter3.051 in / 77.5 mm
Piston Outside Diameter3.146 in / 79.9 mm
ClassificationOE
Skirt Length0.178 in / 4.51 mm
Piston Pin Inside Diameter0.413 in / 10.5 mm
Piston Pin Length1.962 in / 49.84 mm
Ring Inside Diameter2.949 in / 74.9 mm
Ring Outside Diameter3.156 in / 80.16 mm
Top Compression Ring Thickness0.046 in / 1.18 mm
Ring MaterialSteel

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)
CruzeL, LS2011, 2012, 2013, 2014, 2015
Cruze LimitedL, LS2016
SonicHatchbackLS, LT, LTZ2012, 2013, 2014, 2015, 2016, 2017, 2018
SonicSedanLS, LT, LTZ2012, 2013, 2014, 2015, 2016, 2017, 2018