Bosch 12-31-7-603-779 Premium Remanufactured 230 Amp Alternator

The Bosch 12-31-7-603-779 is a premium 100% remanufactured alternator delivering a high-capacity 230 amp output, engineered to restore full charging system performance to your vehicle. Remanufactured to meet or exceed original equipment specifications, this alternator provides a reliable, cost-effective alternative to purchasing a brand-new unit without sacrificing quality or durability.

The alternator is responsible for converting engine mechanical energy into electrical energy, keeping your battery charged and powering all onboard electrical systems. A failing alternator can lead to battery drain, dimming lights, erratic electrical behavior, and eventual no-start conditions — making timely replacement critical.

Key Features:

• 230 amp output for high-demand electrical systems
• 100% remanufactured to OEM specifications for reliable, like-new performance
• Direct OEM replacement — serviced as a complete assembly
• Engineered for precision fit and function with no modification required
• Helps restore proper battery charging and stable electrical system operation

OEM & Cross-Reference Part Numbers:

• BMW OEM: 12-31-7-603-779 / 12-31-7-603-782
• Replaces: 12-31-4-595-890, 12-31-7-575-344, 12-31-7-603-782
• Cross-Reference: 439636, AL9445X

Note: This alternator is serviced and sold as a complete assembly only. A core deposit may apply at time of purchase and will be refunded upon return of your original unit.