Bosch AL4304X Alternator

Bosch Remanufactured Alternator AL4304X

The Bosch AL4304X remanufactured alternator is built for 12-volt charging systems that need stable output and dependable electrical performance. It is a 90-amp unit with an internal fan, internal regulator, and included pulley for direct replacement service on select Subaru and Saab applications.

Bosch Premium Alternators are remanufactured, then built and tested to support consistent operation and reliability in everyday driving. The AL4304X is a practical OE-style replacement for drivers searching for a remanufactured alternator for Subaru Baja, Forester, Impreza, Legacy, and Outback, as well as the 2005 Saab 9-2X.

Key Features

• Part number: AL4304X
• 12-volt remanufactured alternator
• 90-amp amperage rating
• Internal fan and internal regulator
• Clockwise rotation direction
• 5-groove pulley with 55 mm outside diameter
• Aluminum case and aluminum case material
• External fan included and pulley included
• External regulator included
• Plug type 319 with rear-view plug clock at 6 o’clock

Detailed Description

The Bosch AL4304X alternator is engineered for charging-system replacement where correct fit, electrical output, and connector configuration matter. This remanufactured unit is designed for select 2000-2006 Subaru and 2005 Saab applications, including Fits 2003-2006 Subaru Baja, N/A; Fits 2005 Saab 9-2X, N/A; Fits 2003-2005 Subaru Forester, N/A; Fits 2005 Subaru Impreza, N/A; Fits 2000-2004 Subaru Legacy, N/A; and Fits 2000-2004 Subaru Outback, N/A. If you are replacing a worn charging unit on a Subaru Legacy or Subaru Outback, AL4304X provides the specified 12-volt, 90-amp configuration for the application.

This part cross-references OE numbers 23700AA31A and 32006062 for the same application.

What This Alternator Helps Address

• Battery warning light caused by charging-system failure
• Low system voltage during idle or accessory use
• Dim headlights or inconsistent electrical performance
• Noise or wear associated with a failing alternator assembly
• Starting issues related to insufficient charging output

Installation Notes and Tips

Verify plug type 319, rear plug orientation, pulley style, and clockwise rotation before installation. Confirm belt alignment with the 5-groove pulley and check the charging circuit, battery condition, and related wiring after replacement. This alternator is not one-wire capable.

Quality Assurance

Bosch Premium Alternators are remanufactured to support performance and reliability expectations for replacement charging-system service. The AL4304X is built and tested as a remanufactured electrical component for the listed Subaru and Saab applications.