Remy 12945 Alternator

Remanufactured 220 Amp Alternator for BMW

This Remy Premium Remanufactured alternator is built for BMW charging-system service where stable output and OE-style fit matter. It delivers 220 amps at 12 volts with an internal voltage regulator, internal fan, and clockwise rotation for the listed BMW applications.

Compatible with BMW X6, 550i, 550i xDrive, 650i, 650i xDrive, X5, 550i GT, 550i GT xDrive, 750i, 750i xDrive, 750Li, and 750Li xDrive applications, this Remy 12945 alternator is a direct replacement option for vehicles using the specified Valeo-style configuration.

Key Features

• 220 amp output for high-demand BMW electrical systems
• 12-volt remanufactured alternator
• Internal voltage regulator for integrated control
• Internal fan design
• Pulley included
• Clockwise rotation
• OE manufacturer reference: Valeo
• Remy Premium Remanufactured line

Product Details

Remy 12945 is a premium remanufactured alternator engineered for BMW charging-system replacement where the original unit uses a Valeo-based design. The 220 amp rating supports vehicles with substantial electrical loads, while the internal regulator and internal fan help maintain consistent charging performance in the correct application. This part cross-references Valeo FG23S010 for the same application.

Use this alternator when servicing BMW X6, BMW X5, BMW 550i, BMW 650i, BMW 750i, and related xDrive or GT variants listed in the fitment data. The part number 12945 is also a useful reference when matching the correct remanufactured charging component for these BMW platforms.

Common Problems This Part Can Address

• Battery warning light or charging-system fault message
• Low charging output from a worn alternator
• Dim lights or electrical instability at idle
• Battery drain caused by alternator performance loss
• Noise or bearing wear from the original charging unit

Installation Notes and Tips

Verify pulley style, rotation direction, amperage rating, and OE manufacturer match before installation. Confirm the vehicle’s charging-system connectors and mounting points against the removed unit, especially on BMW applications with Valeo-based alternators. After installation, inspect belt condition and charging voltage to confirm proper system operation.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to meet application-specific replacement needs for electrical and starting components. This alternator is built around the listed OE-style configuration for BMW fitment and charging-system service.