GM Genuine Parts Engine Long Block
OE
Pack of 1

GM Genuine Parts Engine Long Block

GM Part #12731640

MSRP$19,049.26*

GM Genuine Parts Engine Long Block 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 Long Block 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

ClassificationOE
Cylinder Quantity8
Piston Rings IncludedYes
Fuel TypeDiesel
Main Bearing Cap Bolt Quantity10
Piston MaterialAluminum
AssembledYes
Fuel Injectors IncludedNo
Valve Springs IncludedYes
Valve Seals IncludedYes
Core Charge6000.00
Bore Diameter4.06 in / 103 mm
Exhaust Valve Diameter1.22 in / 31 mm
Deck Height10.47 in / 266 mm
Intake Valve Diameter1.3 in / 33 mm

36 Months/100,000 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.

Certain automotive parts can be recycled and remanufactured for future use. These parts have a "core charge" that is used as a deposit on the portion of the part that can be reused. The reason for this charge is to encourage the return of your old part. When the recyclable component from your old part is returned to us, the charge is refunded to you.

ModelBody StyleTrimYear(s)
Silverado 4500 HD2019, 2020, 2021, 2022, 2023
Silverado 5500 HD2019, 2020, 2021, 2022, 2023
Silverado 6500 HD2019, 2020, 2021, 2022, 2023