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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 a rectifier then captures as AC power. 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, your alternator is likely on its last legs even after a thorough charging. 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 like yours, ensuring the compatible performance and fit you want. Find everything you need for the project in our online auto parts inventory, in stock and ready to ship to your door. Please contact us if you have any questions while you shop!

Alternator
MSRP $676.96
$528.37
Part Number: 23700AA390
Subaru Subaru
Other Names: Alternator Ay
Description: Forester. Impreza.
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Outback
Alternator
MSRP $580.53
$453.10
Part Number: 23700AA5228A
Subaru Subaru
Other Names: Alternator Assembly
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...
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback
Alternator
MSRP $620.71
$484.47
Part Number: 23700AA5418A
Subaru Subaru
Other Names: Alternator Assembly
Replaces: 23700AA540, 23700AA541
Description: Forester. Impreza. 2.5l. With sti. With turbo.
Fits:
  • Subaru:
    • Forester,
    • Impreza
Alternator
MSRP $586.36
$457.65
Part Number: 23700AA5818A
Subaru Subaru
Other Names: Alternator Assembly
Replaces: 23700AA580, 23700AA581
Description: Tribeca.
Fits:
  • Subaru:
    • Tribeca
Alternator
MSRP $620.71
$484.47
Part Number: 23700AA6918A
Subaru Subaru
Other Names: Alternator Assembly
Replaces: 23700AA690, 23700AA691
Description: Impreza. Without turbo.
Fits:
  • Subaru:
    • Impreza
Alternator
MSRP $533.03
$416.03
Part Number: 23700AA721
Subaru Subaru
Other Names: Alternator Ay
Replaces: 23700AA720
Description: Impreza. Without turbo. XV Crosstrek. Without hybrid.
Fits:
  • Subaru:
    • Impreza,
    • XV Crosstrek
Alternator
MSRP $588.07
$458.99
Part Number: 23700AB030
Subaru Subaru
Other Names: Alternator Ay
Replaces: 23700AA760, 23700AA761
Description: Forester.
Fits:
  • Subaru:
    • Forester
Alternator
MSRP $436.10
$340.38
Part Number: 23700AB051
Subaru Subaru
Other Names: Altntr Assembly
Replaces: 23700AB050, 23700AB13A
Description: Forester. From 05/23/2017, 2.5L. WRX. Crosstrek. 2.5l.
Fits:
  • Subaru:
    • Crosstrek,
    • Forester,
    • Legacy,
    • Outback,
    • WRX
Alternator
MSRP $593.16
$462.96
Part Number: 23700AB180
Subaru Subaru
Other Names: Altntr Assembly
Description: BRZ. 2.4l.
Fits:
  • Subaru:
    • BRZ
Alternator
MSRP $225.70
$151.67
Part Number: 23708AA340
Subaru Subaru
Other Names: Rotor, Rotor Assembly Alternator
Description: Legacy/Outback. 2.5l. From 12/5/12.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $304.45
$204.59
Part Number: 23700AA190R1
Subaru Subaru
Other Names: Remanufactured Alternator
Replaces: 23700AA190
Description: SVX.
Fits:
  • Subaru:
    • SVX
Alternator
MSRP $309.52
$208.00
Part Number: 23700AA37AR1
Subaru Subaru
Other Names: Remanufactured Alternator
Replaces: 23700AA37A, 23700AA37A8A
Description: Manual trans. Legacy. All. Outback. 2.5l. Baja. Without turbo.
Fits:
  • Subaru:
    • Baja,
    • Legacy,
    • Outback
Alternator
MSRP $533.03
$416.03
Part Number: 23700AA751
Subaru Subaru
Other Names: Altntr Assembly
Replaces: 23700AA750
Description: BRZ.
Fits:
  • Subaru:
    • BRZ
Alternator
MSRP $580.71
$453.25
Part Number: 23700AA831
Subaru Subaru
Other Names: Alternator Ay
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...
Fits:
  • Subaru:
    • Legacy,
    • Outback,
    • Tribeca
Alternator
MSRP $608.53
$474.96
Part Number: 23700AA871
Subaru Subaru
Other Names: Altntr Assembly
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...
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • WRX STI
Alternator
MSRP $1,232.62
$1,053.52
Part Number: 23700AA901
Subaru Subaru
Other Names: Alternator Ay
Description: With hybrid. XV Crosstrek.
Fits:
  • Subaru:
    • Crosstrek,
    • XV Crosstrek
Alternator
MSRP $405.96
$318.27
Part Number: 23700AA98A
Subaru Subaru
Other Names: Alternator Assembly
Fits:
  • Subaru:
    • Impreza
Alternator
MSRP $445.20
$347.48
Part Number: 23700AA98B
Subaru Subaru
Other Names: Altntr Assembly
Description: Impreza.
Fits:
  • Subaru:
    • Impreza
Alternator
MSRP $588.07
$458.99
Part Number: 23700AB000
Subaru Subaru
Other Names: Alternator Assembly
Replaces: 23700AA921
Description: 2.5L.
Fits:
  • Subaru:
    • Forester
Alternator
MSRP $233.40
$156.84
Part Number: 23700AA02R
Subaru Subaru
Other Names: Remanufactured Alternator
Replaces: 23700AA020, 429907700
Description: Manual steering. All models. Sedan, coupe, wagon. Loyale. Manual trans. With turbo. Brat.
Fits:
  • Subaru:
    • Brat,
    • DL,
    • GL,
    • GL-10,
    • Loyale,
    • RX
Alternator
MSRP $683.43
$533.42
Part Number: 23700AA3708A
Subaru Subaru
Other Names: Alternator Ay
Replaces: 23700AA370
Description: Forester. Impreza. 2.5l. 2.5L turbo. Baja. With turbo.
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza,
    • Legacy
Alternator
MSRP $676.79
$528.23
Part Number: 23700AA4018A
Subaru Subaru
Other Names: Altntr Assembly
Replaces: 23700AA401
Description: Auto trans. Legacy. Outback. 3.0l.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $615.66
$480.52
Part Number: 23700AA5108A
Subaru Subaru
Other Names: Alternator Assembly
Replaces: 23700AA510
Description: Fits Legacy, Outback, Tribeca Alternator Your alternator replenishes your battery when your car is running. If you have a battery...
Fits:
  • Subaru:
    • B9 Tribeca,
    • Legacy,
    • Outback
Alternator
MSRP $360.11
$282.33
Part Number: 23700AA78A8A
Subaru Subaru
Other Names: Alternator Ay
Replaces: 23700AA78A
Description: From 12/5/12. 2.5L.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $608.53
$474.96
Part Number: 23700AA911
Subaru Subaru
Other Names: Altntr Assembly
Replaces: 23700AA910
Description: WRX. Impreza. Without turbo. Without hybrid. XV Crosstrek.
Fits:
  • Subaru:
    • Crosstrek,
    • Impreza,
    • WRX,
    • XV Crosstrek
Alternator
MSRP $608.53
$474.96
Part Number: 23700AA931
Subaru Subaru
Other Names: Altntr Assembly
Replaces: 23700AA930
Description: Legacy, Outback. 3.6l.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $608.53
$474.96
Part Number: 23700AA970
Subaru Subaru
Other Names: Alternator Ay
Description: Crosstrek. 2.0l. To 5/23/17.
Fits:
  • Subaru:
    • Crosstrek
Alternator
MSRP $608.53
$474.96
Part Number: 23700AA971
Subaru Subaru
Other Names: Alternator Ay
Description: Crosstrek. 2.0l. From 5/23/17. From 05/23/2017.
Fits:
  • Subaru:
    • Crosstrek
Alternator
MSRP $588.07
$458.99
Part Number: 23700AA990
Subaru Subaru
Other Names: Alternator Ay
Description: BRZ.
Fits:
  • Subaru:
    • BRZ
Alternator
MSRP $480.47
$375.01
Part Number: 23700AB01A
Subaru Subaru
Other Names: Altntr Assembly
Description: Legacy, Outback. 2.5l.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $181.48
$121.96
Part Number: 23708AA34A
Subaru Subaru
Other Names: Rotor Ay Alternator
Description: Legacy/Outback. 2.5l. To 12/4/12.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $586.34
$457.64
Part Number: 23700AA7018A
Subaru Subaru
Other Names: Alternator Ay
Replaces: 23700AA700, 23700AA701
Description: Forester. Without turbo. With hybrid.
Fits:
  • Subaru:
    • Forester,
    • XV Crosstrek
Alternator
MSRP $480.49
$375.02
Part Number: 23700AA91B
Subaru Subaru
Other Names: Alternator Ay
Replaces: 23700AA91A
Description: Fits Legacy, Outback Alternator Your alternator replenishes your battery when your car is running. If you have a battery light, low...
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $527.76
$411.91
Part Number: 23700AB020
Subaru Subaru
Other Names: Alternator Ay
Description: Legacy, Outback. 3.6l.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator
MSRP $480.46
$375.00
Part Number: 23700AB16A
Subaru Subaru
Other Names: Alternator Ay
Replaces: 23700AB04A
Description: Legacy, Outback. With turbo. Ascent.
Fits:
  • Subaru:
    • Ascent,
    • Legacy,
    • Outback
Alternator Pulley
MSRP $126.65
$86.63
Part Number: 23752AA050
Subaru Subaru
Other Names: Pulley
Description: Without turbo. 2.5L, all. 2.5L, manual trans.
Notes: Included with alternator assembly.
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback
Alternator Pulley
MSRP $110.88
$75.84
Part Number: 23752AA100
Subaru Subaru
Other Names: Pulley, Pulley Alternator
Description: 3.6L. 3.0L.
Notes: Included with alternator assembly.
Fits:
  • Subaru:
    • B9 Tribeca,
    • Legacy,
    • Outback,
    • Tribeca
Alternator Pulley
MSRP $116.25
$79.52
Part Number: 23752AA15A
Subaru Subaru
Other Names: Pulley, Pulley Alternator
Description: 2.5L.
Notes: Included with alternator.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Alternator Bolt
MSRP $1.64
$1.06
Part Number: 808208310
Subaru Subaru
Other Names: Bracket Bolt, Bolt
Fits:
  • Subaru:
    • Impreza
Alternator Belt
MSRP $23.18
$17.94
Part Number: 809214070
Subaru Subaru
Other Names: V Belt 14X5X730
Fits:
  • Subaru:
    • Justy
Alternator Bracket
MSRP $69.92
$48.24
Part Number: 11709AA110
Subaru Subaru
Other Names: Bracket Alternator
Description: With hybrid.
Fits:
  • Subaru:
    • Crosstrek,
    • XV Crosstrek
Alternator Bolt
MSRP $2.75
$2.13
Part Number: 800708380
Subaru Subaru
Other Names: Bolt
Replaces: 800108710, 800708100
Fits:
  • Subaru:
    • Forester
Alternator Bolt
MSRP $2.68
$2.08
Part Number: 808408120
Subaru Subaru
Other Names: Alternator Bracket Bolt, Bolt 8X60X60
Description: #2. Alternator,bolt.
Fits:
  • Subaru:
    • Crosstrek,
    • Forester,
    • WRX
Alternator Belt
MSRP $22.17
$17.16
Part Number: 809218210
Subaru Subaru
Other Names: V Belt 18X5 8X880
Replaces: 809218150
Fits:
  • Subaru:
    • SVX
Alternator Belt
MSRP $19.95
$15.44
Part Number: 809218260
Subaru Subaru
Other Names: Accessory Drive Belt, V Belt 18X6X887
Replaces: 809218200
Description: 2.5L. Routing:Crk,Alt,Ps. Alternator and Power Steering.
Fits:
  • Subaru:
    • Baja,
    • Legacy,
    • Outback
Alternator Belt
MSRP $44.95
$31.02
Part Number: SOA332X305
Subaru Subaru
Other Names: A C Belt
Replaces: 809221020
Description: With xt6 coupe.
Notes: Order by description.
Fits:
  • Subaru:
    • XT
Alternator Belt
MSRP $22.95
$17.76
Part Number: 809214010
Subaru Subaru
Other Names: V Belt
Fits:
  • Subaru:
    • Justy
Alternator Belt
MSRP $25.25
$19.54
Part Number: 809218450
Subaru Subaru
Other Names: Serpentine Belt, V Belt 18X5X882
Replaces: 809218300, 809218310, 809218380, 809218430
Description: 2.5L. Forester. With turbo. Without sti model. 2.0L. Impreza. 2.0.
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza
Alternator Belt
MSRP $39.95
$27.57
Part Number: 809221100
Subaru Subaru
Other Names: Serpentine Belt, V Belt
Replaces: 809221050
Description: 3.0L.
Fits:
  • Subaru:
    • Outback
Alternator Pulley
MSRP $96.85
$66.25
Part Number: 23752AA070
Subaru Subaru
Other Names: Pulley, Pulley Altntr
Description: WRX STI. 2.5L turbo.
Notes: Included with alternator.
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX STI
Alternator Brace
MSRP $5.43
$4.21
Part Number: 11717AA060
Subaru Subaru
Other Names: Alternator Plate, Mount Bracket Brace, Plate Alternator
Replaces: 11717AA030
Description: 2.5L. All. 3.0L. 2.0L.
Fits:
  • Subaru:
    • B9 Tribeca,
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • Tribeca,
    • WRX STI
Alternator Pulley Cap
MSRP $7.98
$6.18
Part Number: 22152AA050
Subaru Subaru
Other Names: Pulley Cover, Pulley Cap, Cover Dust Proof
Notes: Included with alternator.
Fits:
  • Subaru:
    • Crosstrek,
    • Forester
Alternator Mount Bolt
MSRP $2.15
$1.66
Part Number: 800510120
Subaru Subaru
Options: Lower
Other Names: Alternator Lower Bolt, B W Ay 10X60X26
Description: Without hybrid.
Fits:
  • Subaru:
    • Crosstrek,
    • Impreza,
    • XV Crosstrek
Alternator Upper Bolt
MSRP $4.50
$3.48
Part Number: 800510150
Subaru Subaru
Other Names: B W Ay 10X115
Description: With hybrid.
Fits:
  • Subaru:
    • Crosstrek,
    • XV Crosstrek
Alternator Mount Bolt
MSRP $1.10
$0.71
Part Number: 808108110
Subaru Subaru
Other Names: Bolt 8X86X22
Description: Type 1.
Fits:
  • Subaru:
    • Impreza
Alternator Mount Bracket
MSRP $88.43
$60.49
Part Number: 22870AA261
Subaru Subaru
Other Names: Bracket Power Strg Pump
Replaces: 22870AA260
Description: Without turbo.
Fits:
  • Subaru:
    • Forester
Alternator Mount Bolt
MSRP $2.68
$2.08
Part Number: 808408150
Subaru Subaru
Other Names: Alternator Bolt, Alternator Bracket Bolt, Bolt 8X99X33
Description: Type 1. Alternator,mount bolt.
Fits:
  • Subaru:
    • Ascent,
    • Crosstrek,
    • Forester,
    • Impreza,
    • WRX
Alternator Mount Bracket
MSRP $43.93
$30.31
Part Number: 11711AA090
Subaru Subaru
Options: Lower
Other Names: Alternator Bracket, Alternator Lower Bracket, Mount Bracket, Bracket CP Altntr
Replaces: 11711AA020, 11711AA051
Description: 2.5L, without ac.
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy
Alternator Mount Bolt
MSRP $1.76
$1.14
Part Number: 808108090
Subaru Subaru
Other Names: Bolt 8X86X22
Fits:
  • Subaru:
    • Crosstrek
Alternator Mount Bolt
MSRP $3.62
$2.80
Part Number: 808408070
Subaru Subaru
Other Names: Compressor Assembly Bolt, A/C Compressor Bolt, Alternator Bracket Bolt, Bolt 8X119X20
Replaces: 800208460, 800608450
Description: 2.0L. Without hybrid. Alternator,mount bolt.
Fits:
  • Subaru:
    • BRZ,
    • Crosstrek,
    • Forester,
    • WRX
Mount Bracket
MSRP $88.43
$60.49
Part Number: 11709AA120
Subaru Subaru
Other Names: Bracket Alternator
Description: 2.5L.
Fits:
  • Subaru:
    • Forester
Pulley
MSRP $74.28
$51.26
Part Number: 23752AA120
Subaru Subaru
Other Names: Pulley Alternator
Description: 2.5L. Without turbo. Without hybrid.
Notes: Included with alternator.
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • XV Crosstrek
Voltage Regulator
MSRP $357.73
$240.40
Part Number: 23815AA211
Subaru Subaru
Other Names: Reg Alternator
Description: Legacy, Outback. 3.6l.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Mount Bracket
MSRP $88.43
$60.49
Part Number: 11709AA090
Subaru Subaru
Other Names: Bracket Alternator
Description: 2.0L.
Fits:
  • Subaru:
    • Forester
Voltage Regulator
MSRP $371.03
$290.89
Part Number: 23815AA180
Subaru Subaru
Other Names: Regulator Alternator
Description: Tribeca. Legacy/Outback. 3.6l. To 02/09/2011.
Fits:
  • Subaru:
    • Legacy,
    • Outback,
    • Tribeca
Cable Assembly
MSRP $688.26
$537.18
Part Number: 82246FJ040
Subaru Subaru
Other Names: Alternate Cord
Description: With hybrid.
Fits:
  • Subaru:
    • Crosstrek,
    • XV Crosstrek
Pulley
MSRP $42.67
$29.44
Part Number: 23752AA010
Subaru Subaru
Other Names: Alternator Pulley
Notes: Included with alternator assembly.
Fits:
  • Subaru:
    • Legacy
Pulley
MSRP $370.00
$248.64
Part Number: 23752AA130
Subaru Subaru
Other Names: Pulley Alternator
Description: 2.0L.
Notes: Included with alternator.
Fits:
  • Subaru:
    • Forester
Pulley
MSRP $317.07
$213.07
Part Number: 23752AA170
Subaru Subaru
Other Names: Pulley Alternator
Description: 2.0L.
Notes: Included with alternator.
Fits:
  • Subaru:
    • Crosstrek
Voltage Regulator
MSRP $357.73
$240.40
Part Number: 23815AA300
Subaru Subaru
Other Names: Regulator Alternator
Description: Forester. Crosstrek. WRX. BRZ. 2.4l.
Fits:
  • Subaru:
    • BRZ,
    • Crosstrek,
    • Forester,
    • Legacy,
    • Outback,
    • WRX
Belt Cover
MSRP $54.03
$37.28
Part Number: 23774AA030
Subaru Subaru
Other Names: Alternator Belt Cover, Cover Belt Alternator
Description: 2.5L without turbo.
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback,
    • WRX STI
Brushes
MSRP $13.90
$10.76
Part Number: 23754AA040
Subaru Subaru
Other Names: Brush Set Alternator
Description: Legacy/Outback. 3.6l. Tribeca. Forester. Without turbo.
Fits:
  • Subaru:
    • Forester,
    • Legacy,
    • Outback,
    • Tribeca
Shield
MSRP $27.07
$20.95
Part Number: 23774AA05A
Subaru Subaru
Other Names: Cover Alternator Belt
Description: 2.5L without turbo.
Fits:
  • Subaru:
    • Legacy,
    • Outback
Rear Housing
MSRP $624.67
$487.56
Part Number: 23727AA680
Subaru Subaru
Options: Rear
Other Names: Rear Cover Alternator
Description: Forester. With turbo.
Notes: Includes Rectifier and Brushes.
Fits:
  • Subaru:
    • Forester
Brushes
MSRP $22.27
$17.23
Part Number: 23754AA010
Subaru Subaru
Other Names: Alternator Brush Set
Description: Impreza. Baja. Forester. With turbo. Tribeca. Legacy/Outback. 3.0l.
Fits:
  • Subaru:
    • B9 Tribeca,
    • Baja,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback

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