
OE
OE
GM Genuine Parts Engine Piston with Pin and Retainers
GM Part #12705612
ACDelco Part #12705612
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: 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
Top Compression Ring Thickness0.05 in / 1.2 mm
Oil Ring Thickness0.02 in / 0.46 mm
ClassificationOE
Second Compression Ring Thickness0.05 in / 1.2 mm
Piston Pin Outside Diameter0.75 in / 19 mm
Piston Pin Length1.85 in / 47.1 mm
Ring Outside Diameter2.91 in / 73.97 mm
Oil Spacer Ring Thickness0.01 in / 0.26 mm
Piston Pin Inside Diameter0.4 in / 10.15 mm
Ring Inside Diameter2.7 in / 68.6 mm
Skirt Length2.13 in / 54 mm
Piston Outside Diameter3.04 in / 77.16 mm
Piston Head TypeFlat
Piston Pin Incorporated BearingsNo
Skirt TypePartial
Piston Pin MaterialSteel
Assembly Lubricant IncludedNo
Piston MaterialAlloy with Nickel
OversizedNo
Ring MaterialSteel
Oil Ring Thickness0.02 in / 0.46 mm
Second Compression Ring Thickness0.05 in / 1.2 mm
Piston Pin Length1.85 in / 47.1 mm
Oil Spacer Ring Thickness0.01 in / 0.26 mm
Ring Inside Diameter2.7 in / 68.6 mm
Piston Outside Diameter3.04 in / 77.16 mm
Piston Pin Incorporated BearingsNo
Piston Pin MaterialSteel
Piston MaterialAlloy with Nickel
Top Compression Ring Thickness0.05 in / 1.2 mm
ClassificationOE
Piston Pin Outside Diameter0.75 in / 19 mm
Ring Outside Diameter2.91 in / 73.97 mm
Piston Pin Inside Diameter0.4 in / 10.15 mm
Skirt Length2.13 in / 54 mm
Piston Head TypeFlat
Skirt TypePartial
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.
