GM Genuine Parts Alternator
OE
Pack of 1

GM Genuine Parts Alternator

GM Part #13563315

ACDelco Part #13563315

MSRP$420.62*

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

  • Consistent power is provided for lights and interior electronics
  • Maintains steady electrical performance throughout your daily commute
  • Converts mechanical energy into electrical power for the vehicle

Pack of 1

About this product

GM Genuine Parts Alternators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Do your headlights dim or dash flicker while idling? It may be time for a new alternator. These alternators convert engine-driven mechanical energy into electrical power, acting as the hub of the charging system to keep the battery charged while supplying steady voltage to lights, ignition, and onboard electronics. By maintaining proper energy flow, they help prevent unexpected battery drains, rough running from low system voltage, and sudden stalling when electrical demand spikes in hot or cold weather. Built to meet the design intent of the original charging system and end-of-line tested for dependable output, they integrate materials and technologies for consistent daily performance. Available in new General Motors parts for original factory quality and in remanufactured options rebuilt to GM standards. GM Genuine Parts are the true OE parts installed during the production or validated by General Motors for GM vehicles.

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Consistent power is provided for lights and interior electronics
  • Maintains steady electrical performance throughout your daily commute
  • Converts mechanical energy into electrical power for the vehicle
  • Handles the heavy electrical loads of modern daily driving
  • Works alongside the battery to manage overall electrical demand
  • Acts as the central hub of the automotive charging system
  • 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

Grade TypeStandard Replacement
Voltage12DC
Pulley Belt TypeSerpentine
Pulley Groove Quantity4
Terminal Quantity3
Case Circumference5.43 in / 138 mm
Split Mounting Foot Overall Inner Spacing2.02 in / 51.2 mm
Drive End To Pulley 1st Groove Distance2.24 in / 56.85 mm
Split Mounting Foot Overall Outside Spacing3.47 in / 88.2 mm
Distance Between Mounting Feet5.15 in / 130.7 mm
ClassificationOE
Outside Pulley Diameter2.39 in / 60.59 mm
Pulley IncludedYes
FinishUncoated
Ground TypeNegative
Plug Clock Rear View Main Mounting Ear at 6 O Clock11
External Fan IncludedNo
AC Service TapNo
Fan TypeInternal
External Regulator IncludedNo
Case MaterialAluminum
Case ColorNatural
Regulator TypeInternal
Mounting TypeFront Mount
One Wire CapableYes
Plug Type365
Decoupled Or Clutch PulleyYes
Rotation DirectionClockwise (Right)
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)
CT4Luxury, Premium Luxury, Sport, V2020, 2021
CT5Luxury, Premium Luxury, Sport2020, 2021
CT6Luxury, Premium Luxury2019