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GM Genuine Parts Alternator
OE
Pack of 1

GM Genuine Parts Alternator

GM Part #13561045

ACDelco Part #13561045

MSRP$468.52*

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 Feet5.45 in / 138.55 mm
Case Circumference5.43 in / 138 mm
ClassificationOE
Drive End To Pulley 1st Groove Distance2.86 in / 72.74 mm
Outside Pulley Diameter2.57 in / 65.22 mm
Pulley Groove Quantity5
Pulley IncludedYes
External Regulator IncludedNo
FinishUncoated
External Fan IncludedNo
AC Service TapNo
Fan TypeInternal
Case MaterialAluminum
Case ColorNatural
Plug Clock Rear View Main Mounting Ear at 6 O Clock2
Regulator TypeInternal
Ground TypeNegative
Mounting TypeFront Mount
Plug Type365
Decoupled Or Clutch PulleyYes
One Wire CapableYes
Rotation DirectionClockwise (Right)
Voltage12DC
Grade TypeStandard Replacement
Amperage Rating156.3A

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)
Express 25002024, 2025, 2026
Express 35002024, 2025, 2026
Express 45002024, 2025, 2026
Silverado 2500 HD2024, 2025, 2026
Silverado 3500 HD2024, 2025, 2026