GM Genuine Parts Generator
OE
Pack of 1

GM Genuine Parts Generator

GM Part #42893173

ACDelco Part #42893173

MSRP$439.26*

GM Genuine Parts Alternators are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Newly manufactured as an exact replacement for your GM vehicle's original alternator
  • 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

Pack of 1

About this product

GM Genuine Parts Alternators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These alternators provide power to the vehicle's electrical systems and charge the battery while the engine is running. 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

  • Newly manufactured as an exact replacement for your GM vehicle's original alternator
  • 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

Pulley Belt TypeSerpentine
Terminal Quantity3
Distance Between Mounting Feet5.15 in / 130.71 mm
Drive End To Pulley 1st Groove Distance3.52 in / 89.35 mm
ClassificationOE
Split Mounting Foot Overall Inner Spacing1.86 in / 47.2 mm
Plug Type365
One Wire CapableYes
FinishUncoated
External Fan IncludedNo
Decoupled Or Clutch PulleyNo
AC Service TapNo
Fan TypeInternal
Regulator TypeInternal
Ground TypeNegative
External Regulator IncludedNo
Case MaterialAluminum
Case ColorNatural
Pulley Groove Quantity5
Pulley IncludedYes
Mounting TypeFront Mount
Plug Clock Rear View Main Mounting Ear at 6 O Clock10
Rotation DirectionClockwise (Right)
Voltage12DC
Case Circumference5.79 in / 147 mm
Amperage Rating156A
Split Mounting Foot Overall Outside Spacing4.69 in / 119 mm
Grade TypeStandard Replacement
Outside Pulley Diameter2.49 in / 63.36 mm

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)
CT5Premium Luxury, V2025, 2026