How to remove and install an alternator in a Subaru Legacy?

Disconnect the cable from the negative battery terminal. Remove the drivebelt cover and remove the alternator drivebelt. If the vehicle is equipped with cruise control, and if the cruise control cable is clipped to the small bracket that's located right behind the alternator electrical connector, detach the clip and set the cable aside to give yourself more room to work. Disconnect the battery cable and the electrical connector from the alternator. Remove this nut and disconnect the battery cable from the B+ terminal, then depress the release tab and disconnect the electrical connector from the alternator. Remove the adjustment and pivot bolts and separate the alternator from the engine. To detach the alternator from the engine, remove the adjustment bolt and the pivot bolt, then lilt the alternator out of the engine compartment. Installation is the reverse of removal. After the alternator is installed, adjust the drivebelt tension.

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25 Alternators found

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Subaru Legacy Alternator Assembly
Part Number: 23700AA91B
$384.57 MSRP: $562.23
You Save: $177.66 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy; Alternator
- Replaces: 23700AA91A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015-2017 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.5L H4
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Subaru Legacy Alternator Compatible
Part Number: 23700AA510
$557.46 MSRP: $815.00
You Save: $257.54 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assembly; Alternator
- Replaced by: 23700AA5108A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006-2009 Subaru Legacy | 3.0R, 3.0R Limited, 3.0R LL-Bean | 3.0L H6
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Subaru Legacy Alternator Assembly
Part Number: 23700AA37A
$223.35 MSRP: $325.00
You Save: $101.65 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA37AR1
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2000-2004 Subaru Legacy | Baja, Baja-S, Base, Brighton, Cold Weather, GT, L, Limited, L-S, SUS Limited | 2.5L H4
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Subaru Legacy Alternator Compatible
Part Number: 23700AA401
$559.91 MSRP: $818.58
You Save: $258.67 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assembly; Alternator
- Replaced by: 23700AA4018A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2001-2005 Subaru Legacy | 3.0R, 3.0R Limited, 3.0R LL-Bean, Flat6, Flat6 L.L.Bean, Flat6-S, SUS Flat6 | 3.0L H6
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Subaru Legacy Alternator Assembly
Part Number: 23700AA931
$502.19 MSRP: $734.20
You Save: $232.01 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy; Alternator
- Replaces: 23700AA930
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015-2017 Subaru Legacy | 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 3.6L H6
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Subaru Legacy Alternator Assembly
Part Number: 23700AB020
$472.30 MSRP: $690.50
You Save: $218.20 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2018-2019 Subaru Legacy | 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 3.6L H6
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Subaru Legacy Alternator Motor
Part Number: 23700AA78A
$288.51 MSRP: $421.80
You Save: $133.29 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assembly
- Replaced by: 23700AA78A8A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013-2014 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.5L H4 DOHC
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Subaru Legacy Alternator Assembly
Part Number: 23700AA620
$481.56 MSRP: $704.03
You Save: $222.47 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA831
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010-2011 Subaru Legacy | 3.6R, 3.6R Limited, 3.6R Premium | 3.6L H6
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Subaru Legacy Alternator Assembly
Part Number: 23700AA621
$481.56 MSRP: $704.03
You Save: $222.47 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA831
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2011-2012 Subaru Legacy | 3.6R, 3.6R Limited, 3.6R Premium | 3.6L H6
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Subaru Legacy Alternator Assembly
Part Number: 23700AB13A
$376.51 MSRP: $471.81
You Save: $95.30 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ALTNTR Assembly
- Replaced by: 23700AB051
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.5L H4 DI
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Subaru Legacy Alternator Assembly
Part Number: 23700AA520
$481.24 MSRP: $703.57
You Save: $222.33 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA5228A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Legacy | GT, GT Limited | 2.5L H4 Turbo
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AA930
$502.19 MSRP: $734.20
You Save: $232.01 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA931
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015 Subaru Legacy | 3.6R, 3.6R Limited, 3.6R Premium | 3.6L H6
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AB16A
$416.96 MSRP: $609.58
You Save: $192.62 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: ALTNTR Assembly
- Replaces: 23700AB04A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Legacy | 2.4R F/R-O, 2.4R Limited, 2.4R Touring | 2.4L H4 DIT
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Subaru Legacy Alternator Assembly
Part Number: 23700AB01A
$416.96 MSRP: $609.58
You Save: $192.62 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2018-2019 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.5L H4
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AA91A
$384.57 MSRP: $562.23
You Save: $177.66 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA91B
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium | 2.5L H4
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AA370
$566.23 MSRP: $827.82
You Save: $261.59 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy; Alternator
- Replaced by: 23700AA3708A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004 Subaru Legacy | Baja-B | 2.5L H4 Turbo
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AA830
$481.56 MSRP: $704.03
You Save: $222.47 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assy; Alternator
- Replaced by: 23700AA831
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013-2014 Subaru Legacy | 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 3.6L H6
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AA63A
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA63B8A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010-2011 Subaru Legacy | 2.5GT Limited, 2.5GT Premium, 2.5i, 2.5i Limited, 2.5i Premium | 2.5L H4 SOHC, 2.5L H4 Turbo
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AA210
Product Specifications
- Other Name: Alternator Assy
- Manufacturer Note: HI:LR185-701 85A
- Replaced by: 23700AA34ARA
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1995 Subaru Legacy | Base, Brighton, L, LS, Post | 2.2L H4
View related parts
Subaru Legacy Alternator Assembly
Part Number: 23700AA63B
Product Specifications
- Other Name: Alternator Assy
- Replaced by: 23700AA63B8A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2011-2012 Subaru Legacy | 2.5GT Limited, 2.5GT Premium, 2.5i, 2.5i Limited, 2.5i Premium | 2.5L H4 SOHC, 2.5L H4 Turbo

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Subaru Legacy Alternator

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Subaru Legacy Alternator Parts Questions & Experts Answers

Alternator Compatible
23700AA401
Q: How to remove and install an alternator in a Subaru Legacy?
A: Disconnect the cable from the negative battery terminal. Remove the drivebelt cover and remove the alternator drivebelt. If the vehicle is equipped with cruise control, and if the cruise control cable is clipped to the small bracket that's located right behind the alternator electrical connector, detach the clip and set the cable aside to give yourself more room to work. Disconnect the Battery Cable and the electrical connector from the alternator. Remove this nut and disconnect the battery cable from the B+ terminal, then depress the release tab and disconnect the electrical connector from the alternator. Remove the adjustment and pivot bolts and separate the alternator from the engine. To detach the alternator from the engine, remove the adjustment bolt and the pivot bolt, then lilt the alternator out of the engine compartment. Installation is the reverse of removal. After the alternator is installed, adjust the drivebelt tension.