Alternator - Subaru (23700AA390)

We offer only Original Subaru Parts

Genuine Subaru Parts
Subaru Parts
  • Subaru
  • 23700AA390

Details

  • Brand:

     Parts

  • SKU:

    23700AA390

  • Other Names:

    Alternator Ay

  • Description:

    Forester. Impreza.


    Alternator – Subaru (23700AA390)

    Experience reliable electrical power and peak performance with the Alternator – Subaru (23700AA390). This genuine OEM unit is manufactured to Subaru’s precise factory standards, delivering consistent charging capability and seamless integration within your engine bay.

    Built to OEM quality Made by Subaru from high-grade materials, this alternator features a robust metal housing and high-performance internal components designed to resist heat, vibration, and continuous load demands. The construction ensures long service life and dependable performance even under challenging driving conditions.

    Technical specifications & compatibility

    • Part Number: 23700AA390

    • Voltage Output: 12 V standard charging

    • Amperage Rating: Factory-spec output (typically 90–100 A depending on model)

    • Plug-and-play fitment: Includes OEM electrical connectors and pulley – no modifications required

    • Vehicle Fitment: Engineered for specific Subaru models (e.g., Impreza, Legacy, Forester). Confirm compatibility by matching the part number with your vehicle’s OEM parts catalog.

    Benefits for professionals & DIY mechanicsDirect OEM replacement – restores factory charging performance without rewiring or adjustments.

     ✔ Precise mounting and alignment – avoids belt misalignment and pully wear by fitting exactly like the original part.  

    Easy installation – fully assembled with correct pulley and electrical plug, ideal for shop installs or at-home repairs.

    Why choose the OEM Alternator (23700AA390)?

    • Factory reliability: Maintains battery charge and supports all electrical systems under real-world driving conditions.

    • Performance consistency: Engineered to Subaru specifications to prevent overcharging or voltage drop issues.

    • Durability assured: Subaru-made components resist degradation over time, outlasting many aftermarket alternatives.

    Ideal applications & maintenance notes Perfect for restoring proper charge voltage in vehicles showing dim headlights, battery drain, or warning lights. Replacing the alternator during engine work or when performing scheduled maintenance ensures lasting electrical system health.

    Invest in the Subaru Alternator (23700AA390) for dependable charging performance and unmatched OEM fitment. Keep your Subaru’s electrical system operating at factory-level efficiency—with a component you can trust to deliver lasting performance.


  • Condition: New
  • MSRP: $817.17
  • Discount: $253.32 (31% off)
  • Sale Price: $563.85
Ships To
Sold In Individual Units
Manufacturer Warranty Minimum of 12 Months
Guaranteed Fitment Requires VIN entry at checkout
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In-House Experts 100 years of combined experience

Alternator - Subaru (23700AA390)

We offer only Original Subaru Parts

Genuine Subaru Parts
Subaru Parts
  • Subaru
  • 23700AA390

Details

  • Brand:

     Parts

  • SKU:

    23700AA390

  • Other Names:

    Alternator Ay

  • Description:

    Forester. Impreza.


    Alternator – Subaru (23700AA390)

    Experience reliable electrical power and peak performance with the Alternator – Subaru (23700AA390). This genuine OEM unit is manufactured to Subaru’s precise factory standards, delivering consistent charging capability and seamless integration within your engine bay.

    Built to OEM quality Made by Subaru from high-grade materials, this alternator features a robust metal housing and high-performance internal components designed to resist heat, vibration, and continuous load demands. The construction ensures long service life and dependable performance even under challenging driving conditions.

    Technical specifications & compatibility

    • Part Number: 23700AA390

    • Voltage Output: 12 V standard charging

    • Amperage Rating: Factory-spec output (typically 90–100 A depending on model)

    • Plug-and-play fitment: Includes OEM electrical connectors and pulley – no modifications required

    • Vehicle Fitment: Engineered for specific Subaru models (e.g., Impreza, Legacy, Forester). Confirm compatibility by matching the part number with your vehicle’s OEM parts catalog.

    Benefits for professionals & DIY mechanicsDirect OEM replacement – restores factory charging performance without rewiring or adjustments.

     ✔ Precise mounting and alignment – avoids belt misalignment and pully wear by fitting exactly like the original part.  

    Easy installation – fully assembled with correct pulley and electrical plug, ideal for shop installs or at-home repairs.

    Why choose the OEM Alternator (23700AA390)?

    • Factory reliability: Maintains battery charge and supports all electrical systems under real-world driving conditions.

    • Performance consistency: Engineered to Subaru specifications to prevent overcharging or voltage drop issues.

    • Durability assured: Subaru-made components resist degradation over time, outlasting many aftermarket alternatives.

    Ideal applications & maintenance notes Perfect for restoring proper charge voltage in vehicles showing dim headlights, battery drain, or warning lights. Replacing the alternator during engine work or when performing scheduled maintenance ensures lasting electrical system health.

    Invest in the Subaru Alternator (23700AA390) for dependable charging performance and unmatched OEM fitment. Keep your Subaru’s electrical system operating at factory-level efficiency—with a component you can trust to deliver lasting performance.


  • Condition: New

Vehicle Fitment

No application/vehicle fitment information available for this product
Vehicle Fitment
Year Make Model Body & Trim Engine & Transmission
( more fitments)
No fitment data available

Product Reviews

Subaru Parts Pros - South Shore Subaru

SubaruPartsPros.com proudly operates as part of South Shore Subaru located in NY. As a Genuine S.O.A Parts dealership we have the ability to obtain any and all Subaru parts needed to fix and maintain your vehicle. We understand shopping for parts online can be confusing and stressful at times because the last thing you want is the wrong part. Rest assured though as when you shop our online store and provide your vehicle identification number (VIN) at checkout it is our duty to make sure each and every part ordered fits your vehicle. In cases where we find a mis-match we will contact you immediately and make the proper correction to your order. Please feel free to drop us a line by using the contact us page or chat live with one of our agents.