MPA Electrical 15734 Alternator

Remanufactured Alternator for BMW Charging Systems

The MPA Electrical 15734 is a remanufactured alternator built for BMW charging system applications that require a Valeo-style 180 amp unit. It is specified for 12-volt systems with an internal regulator, internal fan, clockwise rotation, and a 6-groove serpentine pulley.

Use this alternator for BMW 745i, 745Li, 545i, and 645Ci applications where the vehicle is equipped with a Valeo 180 amp alternator. The MPA Electrical 15734 is a direct-fit charging component for select BMW models from 2003 through 2005.

Key Features

• Remanufactured alternator for charging system replacement
• 180 amp output for 12-volt electrical systems
• Internal regulator and internal cooling fan
• 6-groove serpentine pulley
• Clockwise rotation with 12:00 clock position
• Manufactured by Valeo for the specified application

Detailed Product Information

MPA Electrical part number 15734 is a remanufactured alternator designed around the OE-style Valeo configuration used in select BMW vehicles. Its 180 amp output supports the electrical demands of the vehicle charging system, while the internal regulator and internal fan help maintain stable operation in the original mounting and belt-drive setup. This part number 15734 is listed for BMW 545i, 645Ci, 745i, and 745Li applications with the matching Valeo 180 amp alternator specification.

This part cross-references BBB Industries 11261 for the same application.

Common Problems This Part Can Address

• Battery warning light caused by alternator output loss
• Low charging voltage at the battery
• Dim lights or electrical instability while driving
• Noise or wear related to a failing alternator assembly
• Charging system faults on BMW 745i, 745Li, 545i, or 645Ci models

Installation Notes and Fitment

Fits 2004-2005 BMW 545i, N/A. Fits 2004-2005 BMW 645Ci, N/A. Fits 2005 BMW 745i, N/A. Fits 2005 BMW 745Li, N/A. Fits 2004 BMW 745i, N/A, from 10/2003 with Valeo 180 amp alternator. Fits 2004 BMW 745Li, N/A, with Valeo 180 amp alternator. Fits 2003 BMW 745i, N/A, with Valeo 180 amp alternator.

Verify the existing alternator matches the listed Valeo 180 amp specification, pulley style, rotation, and clock position before installation. Confirm belt alignment and electrical connector match the original unit on BMW 745i, 745Li, 545i, and 645Ci applications.

Quality Assurance

MPA Electrical remanufactured components are built to restore OE-style fit and function for the specified application. This alternator is remanufactured to match the listed electrical and mounting specifications for select BMW charging systems.