GM Genuine Parts Engine Piston
OE
Pack of 1

GM Genuine Parts Engine Piston

GM Part #89017849

ACDelco Part #89017849

MSRP$123.06*

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
Piston Pin Inside Diameter0.551 in / 14 mm
Top Compression Ring Thickness0.046 in / 1.17 mm
Piston Inside Diameter3.819 in / 97 mm
Piston Outside Diameter4.173 in / 106 mm
Oil Ring Thickness0.1 in / 2.54 mm
Oil Spacer Ring Thickness0.06 in / 1.52 mm
Skirt Length0.15 in / 3.8 mm
Ring Inside Diameter3.709 in / 94.21 mm
Ring Outside Diameter4.001 in / 101.63 mm
Piston Pin Outside Diameter0.943 in / 23.95 mm
Piston Pin Length2.564 in / 65.12 mm
ClassificationOE
Second Compression Ring Thickness0.058 in / 1.48 mm
Piston Pin MaterialSteel
Skirt TypePartial
Piston Pin Incorporated BearingsNo
Piston MaterialAluminum
Piston Head TypeDish
Assembly Lubricant IncludedNo
OversizedNo

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)
Avalanche2007, 2008, 2009
Express 25002006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Express 35002006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Express 45002010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Silverado 15002007, 2008, 2009