MPA Electrical 11913 Alternator

OE-Style Remanufactured Alternator

MPA Electrical 11913 is a remanufactured 12-volt alternator built for OE fit, form, and function. It is a Valeo-family unit with an internal fan, internal regulator, clockwise rotation, and a 7-groove serpentine pulley for BMW charging-system applications.

This alternator is a direct replacement for BMW high-output charging systems that require 250 amps. It is a practical choice for BMW M850i xDrive, X7, X5, and 750i xDrive models where stable charging output and correct pulley and plug configuration matter.

Key Features

• 12.0-volt remanufactured alternator
• 250.0 amp amperage rating
• Internal fan and internal voltage regulator
• Clockwise (right) rotation
• Included pulley with 7-groove serpentine belt design
• Valeo family construction
• Plug clock: rear view main mounting ear at 6 o'clock, 3
• Decoupled or clutch pulley: No

Product Details

MPA Electrical Part Number 11913 is engineered as an OE replacement alternator for BMW charging systems that use a Valeo-style layout. The remanufactured design combines factory-style fitment with updated remanufacturing and testing processes to support proper electrical output and installation alignment. If you are replacing a worn BMW alternator on an M550i xDrive, X6, X7, or Alpina XB7, this unit matches the required 12-volt, 250-amp specification and serpentine pulley configuration.

This part cross-references BMW 12 31 8 611 280 and 12 31 8 636 418 for the same application. Part number 11913 is also a useful reference when searching for a remanufactured BMW alternator with the correct Valeo family fit.

Common Problems This Part Addresses

• Low charging voltage or battery warning lights
• Alternator bearing noise or charging-system wear
• Electrical instability under high accessory load
• Failure of the original alternator regulator or internal fan assembly
• Incorrect pulley or connector match during replacement

Installation Notes

Verify the vehicle’s alternator family, plug clock position, pulley style, and amperage rating before installation. Confirm the serpentine belt routing and clockwise rotation requirement on the BMW application. This alternator is listed for 2025-2015 BMW coverage across Alpina B8 Gran Coupe, M850i xDrive, M850i xDrive Gran Coupe, M550i xDrive, X5, X6, 750i xDrive, Alpina XB7, X7, 750i, and 750Li xDrive applications as shown in the fitment data.

Quality Assurance

MPA Electrical remanufactured alternators are produced to OE fit, form, and function standards and tested with current remanufacturing equipment to support reliable replacement performance.