Bosch AL4303X Alternator

Reliable Remanufactured Alternator for Subaru Vehicles

The Bosch AL4303X Alternator (Remanufactured) is designed to provide dependable electrical charging performance for select Subaru models. Engineered to meet OEM specifications, this 12-volt alternator ensures consistent power delivery and efficient operation for your Subaru Forester, Impreza, Legacy, or Outback.

• 12-volt electrical system compatibility
• 110 amp amperage rating for stable charging
• Internal fan type with included external fan for optimal cooling
• Clockwise rotation direction
• Includes pulley with 5 grooves and 57mm outside diameter
• Internal regulator type with external regulator included
• Aluminum case material and color for durability and heat dissipation
• Plug type 325 with rear view main mounting ear at 6 o'clock position
• Remanufactured to meet original equipment standards

About the Bosch Alternator (Remanufactured) Product Line

The Bosch Alternator (Remanufactured) line offers high-quality remanufactured alternators that restore vehicle charging systems to factory performance. Each unit undergoes rigorous testing and refurbishment to ensure reliability and longevity. The AL4303X model is part of this line, providing a cost-effective solution for Subaru owners seeking a replacement alternator that maintains OEM specifications.

Detailed Product Description and Specifications

This Bosch AL4303X alternator features a 12-volt system with a 110 amp rating, suitable for maintaining the electrical demands of Subaru Forester, Impreza, Legacy, and Outback models. The internal fan design is complemented by an included external fan to enhance cooling efficiency during operation. The alternator rotates clockwise and includes a 5-groove pulley with a 57mm outside diameter, compatible with 5s belt types. Its aluminum case offers durability and effective heat dissipation, while the internal regulator type with an external regulator included ensures stable voltage regulation. The plug type 325 and rear view main mounting ear positioned at 6 o'clock facilitate proper fitment and installation.

Common Applications and Issues Addressed

• Replacement for failing or weak alternators in Subaru Forester, Impreza, Legacy, and Outback
• Resolves battery charging problems and electrical system malfunctions
• Addresses issues with dimming headlights or electrical accessories
• Fixes alternator pulley or fan failures causing overheating
• Restores proper voltage regulation and prevents battery drain

Installation Notes and Tips

Ensure compatibility with your specific Subaru model and engine configuration before installation. The AL4303X alternator includes the pulley and external fan, but does not support one-wire operation. Proper alignment of the 5-groove pulley with the belt is essential for optimal performance. Verify the clockwise rotation direction and plug type 325 connections during installation to avoid electrical issues.

Quality Assurance and Warranty

This Bosch remanufactured alternator is built to meet or exceed original equipment manufacturer standards. Each unit is tested for electrical output, durability, and fitment accuracy. The product is packaged securely in a box to prevent damage during transit. Warranty details are provided by Bosch and typically cover defects in materials and workmanship for a specified period.