Remanufactured Alternator for BMW Charging Systems

MPA Electrical Part Number 14012 is a remanufactured 12-volt alternator built for OE fit, form, and function. It is engineered for BMW charging system service where a direct replacement alternator is needed for consistent electrical output.

This remanufactured alternator uses Bosch family construction, an internal fan, and an internal regulator. It includes the pulley and uses a 6-groove serpentine belt drive with clockwise rotation, making it a direct-fit service part for the listed BMW applications.

Key Features

• 12.0-volt alternator for BMW charging system replacement
• Remanufactured to OE fit, form, and function standards
• Internal fan and internal voltage regulator
• Clockwise (right) rotation
• Includes pulley; 6-groove serpentine belt type
• Bosch family design
• Rear view plug clock position: 8 o'clock
• Decoupled or clutch pulley: No

Detailed Product Overview

MPA Electrical 14012 is a remanufactured alternator for BMW vehicles that require a Bosch-style, 12-volt charging unit with an internal regulator. The unit is built to match OE mounting and operating characteristics, helping maintain proper battery charging and electrical system performance in applications such as the BMW 340i, 440i, 530i, 540i, 740i, X3, and X4. This part number 14012 is also referenced for OE-style replacement needs where the original alternator uses a serpentine pulley setup and clockwise rotation.

MPA Electrical’s remanufactured product line focuses on OE replacement coverage with modern remanufacturing and testing processes. For buyers searching for a remanufactured BMW alternator, BMW 530i alternator replacement, or BMW 440i charging system part, this unit provides a direct-service option for the listed vehicles.

This part cross-references BMW OE numbers 12 31 8 571 357 and 12 31 8 635 552 for the same application.

What This Alternator Helps Address

• Battery warning light or charging system fault codes
• Weak battery charging or low system voltage
• Dim lights or unstable electrical performance
• Alternator bearing or internal regulator failure
• Charging loss caused by worn OE alternator components

Installation Notes and Fitment

Compatible With the following BMW applications: Fits 2017-2020 BMW 440i, N/A; Fits 2017-2020 BMW 440i Gran Coupe, N/A; Fits 2017-2020 BMW 440i xDrive, N/A; Fits 2017-2020 BMW 440i xDrive Gran Coupe, N/A; Fits 2017-2020 BMW 530i, N/A; Fits 2017-2020 BMW 530i xDrive, N/A; Fits 2017-2020 BMW 540i, N/A; Fits 2017-2020 BMW 540i xDrive, N/A; Fits 2017-2019 BMW 340i GT xDrive, N/A; Fits 2018-2019 BMW 640i xDrive Gran Turismo, N/A; Fits 2018-2019 BMW X3, N/A; Fits 2019 BMW X4, N/A; Fits 2016-2018 BMW 340i, N/A; Fits 2016-2018 BMW 340i xDrive, N/A; Fits 2018 BMW 540d xDrive, N/A; Fits 2016-2018 BMW 740i, N/A; Fits 2017-2018 BMW 740i xDrive, N/A.

Verify pulley style, connector orientation, and mounting ear position before installation. This alternator uses a rear-view plug clock position of 8 o'clock and a clockwise rotation pattern, so matching the original unit is important for proper fitment.

Quality Assurance

MPA Electrical remanufactured alternators are processed and tested to support OE-style replacement performance. The remanufacturing approach combines original-equipment fitment targets with updated testing methods to help ensure consistent output for the listed BMW applications.