OEM Subaru Alternators

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Your alternator is an important part of your Subaru vehicle's charging system. Put simply, it's responsible for taking the mechanical energy produced by the engine and converting it into the electricity that most parts and systems use.

How Alternators Work

It all starts with the engine crankshaft. Turning the pistons' vertical motion into rotary motion, it powers a drive belt attached to a pulley located on your rotor shaft. The rotor shaft spins, which agitates magnetic coils that are located inside the rotor. The coils generate a magnetic field that's then captured as AC power by a rectifier. The rectifier converts that power into the DC power that your vehicle uses to charge the battery and power parts like the power windows, electronics, and wipers.

Over time, even the best alternator can go bad. When that happens, your battery is the only thing producing the electricity powering your systems. That's going to drain it, and quickly.

Recognize the Symptoms of a Bad Alternator

Signs of a failing alternator include:

  • Dimming or flickering headlights
  • The power windows stop working
  • Your sound system acts up
  • The battery keeps dying
  • You hear a whining noise coming from your engine

Buy Genuine Subaru Alternators Online

The first thing you should do when you experience any of the above symptoms is to test your battery. If the voltage is below normal, even after a thorough charging, your alternator is likely on its last legs. Replace yours before it fails completely to avoid getting stranded on the side of the road. Subaru alternators are the only ones made specifically to work with models such as yours, ensuring the compatible performance and fit that you want. Find everything you need for the project right here in our online auto parts inventory, in stock and ready to ship to your door. Buy now to save time and money!

Alternator
MSRP $580.53
$453.10
Part Number: 23700AA7018A
Other Names: Alternator Ay More Names
Replaces: 23700AA700, 23700AA701
Description: Forester. Without turbo. With hybrid. More Info
Fits:
  • Subaru:
    • Forester,
    • XV Crosstrek
Alternator
MSRP $429.96
$335.58
Part Number: 23700AA91B
Other Names: Alternator Ay More Names
Replaces: 23700AA91A
Description: Fits Legacy, Outback Alternator Your alternator replenishes your battery when your car is running. If you have a battery light, low... More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $527.76
$411.91
Part Number: 23700AB020
Other Names: Alternator Ay More Names
Description: Legacy, Outback. 3.6l. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $421.43
$330.40
Part Number: 23700AB04A
Other Names: Altntr Assembly More Names
Description: Acsent. More Info
Fits:
  • Subaru:
    • Ascent
Alternator
MSRP $421.43
$330.40
Part Number: 23700AB16A
Other Names: Alternator Ay More Names
Description: 2.4L turbo. More Info
Fits:
  • Subaru:
    • Ascent,
    • Legacy,
    • Outback
Alternator
MSRP $233.40
$156.84
Part Number: 23700AA00R
Other Names: Remanufactured Alternator More Names
Replaces: 23700AA000
Description: All models. Sedan, coupe, wagon. Power steering. P/s. Loyale. Auto trans. Without turbo, without ac. More Info
Fits:
  • Subaru:
    • DL,
    • GL,
    • GL-10,
    • Loyale,
    • RX
Alternator
MSRP $304.45
$204.59
Part Number: 23700AA190R1
Other Names: Remanufactured Alternator More Names
Replaces: 23700AA190
Description: SVX. More Info
Fits:
  • Subaru:
    • SVX
Alternator
MSRP $309.52
$208.00
Part Number: 23700AA37AR1
Other Names: Remanufactured Alternator More Names
Replaces: 23700AA37A, 23700AA37A8A
Description: Manual trans. Legacy. All. Outback. 2.5l. Baja. Without turbo. More Info
Fits:
  • Subaru:
    • Baja,
    • Legacy,
    • Outback
Alternator
MSRP $309.52
$208.00
Part Number: 23700AA430R1
Other Names: Remanufactured Alternator More Names
Replaces: 23700AA430
Description: 2.0, 2.5L. Impreza. 2.0l. More Info
Fits:
  • Subaru:
    • Impreza
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA751
Other Names: Altntr Assembly More Names
Replaces: 23700AA750
Description: BRZ. More Info
Fits:
  • Subaru:
    • BRZ
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA831
Other Names: Alternator Ay More Names
Replaces: 23700AA620, 23700AA621, 23700AA830
Description: Fits Legacy, Outback, Tribeca Alternator Your alternator replenishes your battery when your car is running. If you have a battery... More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback,
    • Tribeca
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA871
Other Names: Altntr Assembly More Names
Replaces: 23700AA680, 23700AA681, 23700AA870
Description: Alternator. Fits Forester, STI, WRX Alternator Your alternator replenishes your battery when your car is running. If you have a... More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • WRX STI
Alternator
MSRP $1,220.42
$1,043.09
Part Number: 23700AA901
Other Names: Alternator Ay More Names
Description: XV Crosstrek. With hybrid. More Info
Fits:
  • Subaru:
    • Crosstrek,
    • XV Crosstrek
Alternator
MSRP $405.96
$318.27
Part Number: 23700AA98A
Other Names: Alternator Assembly More Names
Description: Impreza. More Info
Fits:
  • Subaru:
    • Impreza
Alternator
MSRP $405.96
$318.27
Part Number: 23700AA98B
Other Names: Altntr Assembly More Names
Fits:
  • Subaru:
    • Impreza
Alternator
MSRP $535.71
$418.13
Part Number: 23700AB000
Other Names: Alternator Assembly More Names
Replaces: 23700AA921
Description: 2.5L. More Info
Fits:
  • Subaru:
    • Forester
Alternator
MSRP $421.43
$330.40
Part Number: 23700AB13A
Other Names: Alternator Ay More Names
Description: 2.5L. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $233.40
$156.84
Part Number: 23700AA02R
Other Names: Remanufactured Alternator More Names
Replaces: 23700AA020, 429907700
Description: Manual steering. All models. Sedan, coupe, wagon. Loyale. Manual trans. With turbo. Brat. More Info
Fits:
  • Subaru:
    • Brat,
    • DL,
    • GL,
    • GL-10,
    • Loyale,
    • RX
  • 1 more
Alternator
MSRP $676.66
$528.13
Part Number: 23700AA3708A
Other Names: Alternator Ay More Names
Replaces: 23700AA370
Description: Forester. Impreza. 2.5l. 2.5L turbo. Baja. With turbo. More Info
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza,
    • Legacy
Alternator
MSRP $670.07
$522.99
Part Number: 23700AA4018A
Other Names: Altntr Assembly More Names
Replaces: 23700AA401
Description: Auto trans. Legacy. Outback. 3.0l. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $609.56
$475.76
Part Number: 23700AA5108A
Other Names: Alternator Assembly More Names
Replaces: 23700AA510
Description: Fits Legacy, Outback, Tribeca Alternator Your alternator replenishes your battery when your car is running. If you have a battery... More Info
Fits:
  • Subaru:
    • B9 Tribeca,
    • Legacy,
    • Outback
Alternator
MSRP $405.95
$272.80
Part Number: 23700AA63B8A
Other Names: Alternator Ay More Names
Replaces: 23700AA63A, 23700AA63B
Description: Fits Legacy, Outback Alternator Your alternator replenishes your battery when your car is running. If you have a battery light, low... More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $405.95
$272.80
Part Number: 23700AA78A8A
Other Names: Alternator Ay More Names
Replaces: 23700AA78A
Description: From 12/5/12. 2.5L. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA911
Other Names: Altntr Assembly More Names
Replaces: 23700AA910
Description: WRX. Without hybrid. Impreza. Without turbo. 2.0L. XV Crosstrek. More Info
Fits:
  • Subaru:
    • Crosstrek,
    • Impreza,
    • WRX,
    • XV Crosstrek
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA931
Other Names: Altntr Assembly More Names
Replaces: 23700AA930
Description: Legacy, Outback. 3.6l. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA970
Other Names: Alternator Ay More Names
Description: Crosstrek. More Info
Fits:
  • Subaru:
    • Crosstrek
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA971
Other Names: Alternator Ay More Names
Description: Crosstrek. From 05/23/2017. More Info
Fits:
  • Subaru:
    • Crosstrek
Alternator
MSRP $578.81
$451.76
Part Number: 23700AA990
Other Names: Alternator Ay More Names
Description: BRZ. More Info
Fits:
  • Subaru:
    • BRZ
Alternator
MSRP $421.43
$330.40
Part Number: 23700AB01A
Other Names: Altntr Assembly More Names
Description: Legacy, Outback. 2.5l. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $168.63
$113.32
Part Number: 23708AA34A
Other Names: Rotor Ay Alternator More Names
Description: Legacy/Outback. 2.5l. To 12/4/12. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $670.24
$523.12
Part Number: 23700AA390
Other Names: Alternator Ay More Names
Description: Forester. Impreza. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Outback
Alternator
MSRP $580.53
$453.10
Part Number: 23700AA5228A
Other Names: Alternator Assembly More Names
Replaces: 23700AA520, 23700AA521, 23700AA522, 23700AA570
Description: Fits Forester, Impreza, Legacy, Outback, STI, WRX Alternator Your alternator replenishes your battery when your car is running. If you... More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback
Alternator
MSRP $569.96
$444.85
Part Number: 23700AA5418A
Other Names: Alternator Assembly More Names
Replaces: 23700AA540, 23700AA541
Description: Forester. Impreza. 2.5l. With sti. With turbo. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza
Alternator
MSRP $580.54
$453.11
Part Number: 23700AA5818A
Other Names: Alternator Assembly More Names
Replaces: 23700AA580, 23700AA581
Description: Tribeca. More Info
Fits:
  • Subaru:
    • Tribeca
Alternator
MSRP $566.87
$442.44
Part Number: 23700AA6918A
Other Names: Alternator Assembly More Names
Replaces: 23700AA690, 23700AA691
Description: Impreza. Without turbo. More Info
Fits:
  • Subaru:
    • Impreza
Alternator
MSRP $527.76
$411.91
Part Number: 23700AA721
Other Names: Alternator Ay More Names
Replaces: 23700AA720
Description: Impreza. Without turbo. XV Crosstrek. Without hybrid. More Info
Fits:
  • Subaru:
    • Impreza,
    • XV Crosstrek
Alternator
MSRP $535.71
$418.13
Part Number: 23700AB030
Other Names: Alternator Ay More Names
Replaces: 23700AA760, 23700AA761
Description: Forester. 2.0L. 2.5L. More Info
Fits:
  • Subaru:
    • Forester
Alternator
MSRP $527.76
$411.91
Part Number: 23700AB051
Other Names: Altntr Assembly More Names
Replaces: 23700AB050
Description: Forester. More Info
Fits:
  • Subaru:
    • Forester
Alternator
MSRP $209.73
$140.94
Part Number: 23708AA340
Other Names: Rotor, Rotor Assembly Alternator More Names
Description: Legacy/Outback. 2.5l. From 12/5/12. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator Bolt
MSRP $1.68
$1.30
Part Number: 808206030
Other Names: Bolt 6X20X18 More Names
Fits:
  • Subaru:
    • BRZ
Alternator Belt
MSRP $22.95
$17.76
Part Number: 809214010
Other Names: V Belt More Names
Fits:
  • Subaru:
    • Justy
Alternator Belt
MSRP $22.95
$17.76
Part Number: 809218450
Other Names: Serpentine Belt, V Belt 18X5X882 More Names
Replaces: 809218300, 809218310, 809218380, 809218430
Description: 2.5L. Forester. With turbo. Without sti model. 2.0L. Impreza. 2.0. More Info
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza
Alternator Belt
MSRP $39.95
$27.57
Part Number: 809221100
Other Names: Serpentine Belt, V Belt More Names
Replaces: 809221050
Description: 3.0L. More Info
Fits:
  • Subaru:
    • Outback
Alternator Hanger
MSRP $24.38
$18.87
Part Number: 10005AA031
Other Names: Hanger Engine More Names
Replaces: 10005AA030
Fits:
  • Subaru:
    • Forester
Alternator Brace
MSRP $5.02
$3.88
Part Number: 11717AA060
Other Names: Alternator Plate, Mount Bracket Brace, Plate Alternator More Names
Replaces: 11717AA030
Description: 2.5L. All. 3.0L. 2.0L. More Info
Fits:
  • Subaru:
    • B9 Tribeca,
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • Tribeca,
    • WRX STI
  • 3 more
Alternator Pulley
MSRP $92.03
$62.95
Part Number: 23752AA070
Other Names: Pulley, Pulley Altntr More Names
Description: WRX STI. 2.5L turbo. More Info
Notes: Included with alternator. More Notes
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX STI
Alternator Belt
MSRP $44.95
$31.02
Part Number: SOA332X305
Other Names: A C Belt More Names
Replaces: 809221020
Description: With xt6 coupe. More Info
Notes: Order by description. More Notes
Fits:
  • Subaru:
    • XT
Alternator Bolt
MSRP $0.86
$0.55
Part Number: 010410200
Other Names: Stay Bolt, Turbocharger Mounting Bolt, Flange Bolt More Names
Replaces: 01041020A, 01041020G
Description: 2.5L turbo. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator Bolt
MSRP $2.48
$1.92
Part Number: 800708380
Other Names: Bolt More Names
Replaces: 800108710, 800708100
Fits:
  • Subaru:
    • Forester
Alternator Bolt
MSRP $2.52
$1.95
Part Number: 808408120
Other Names: Bolt 8X60X60 More Names
Description: #2. More Info
Fits:
  • Subaru:
    • Crosstrek,
    • Forester

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