GM Genuine Parts Alternator
OE
Pack of 1

GM Genuine Parts Alternator

GM Part #13561037

ACDelco Part #13561037

MSRP$462.68*

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
Pulley Groove Quantity4
Terminal Quantity3
Split Mounting Foot Overall Inner Spacing2.02 in / 51.2 mm
Drive End To Pulley 1st Groove Distance2.24 in / 56.85 mm
Case Circumference5.63 in / 143 mm
Distance Between Mounting Feet5.15 in / 130.7 mm
ClassificationOE
Outside Pulley Diameter2.39 in / 60.59 mm
FinishUncoated
External Fan IncludedNo
AC Service TapNo
Plug Clock Rear View Main Mounting Ear at 6 O Clock12
Pulley IncludedYes
Mounting TypeFront Mount
Plug Type365
Decoupled Or Clutch PulleyYes
One Wire CapableYes
Regulator TypeInternal
Ground TypeNegative
External Regulator IncludedNo
Case MaterialAluminum
Case ColorNatural
Fan TypeInternal
Rotation DirectionClockwise (Right)
Voltage12DC
Split Mounting Foot Overall Outside Spacing3.39 in / 86.2 mm
Amperage Rating156.3A
Grade TypeStandard Replacement

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, Sport2025, 2026