MPA Electrical 13986 Alternator

Remanufactured Bosch Alternator for BMW

MPA Electrical Part Number 13986 is a remanufactured 12-volt alternator built for BMW charging-system applications that call for a Bosch 120 amp unit. It features an internal fan, internal regulator, clockwise rotation, and a 6-groove serpentine pulley for the specified oval-connector fitments.

Key Features

• 120 amps output for BMW charging-system replacement needs
• 12-volt alternator with internal regulator
• Internal fan design for integrated cooling
• 6-groove serpentine pulley
• Clockwise rotation
• Built for Bosch 120 amp alternator applications
• MPA Electrical remanufactured part number 13986

Product Details

This remanufactured alternator is specified for BMW 325Ci, 330Ci, 325i, and Z4 applications that use the Bosch 120 amp alternator configuration with an oval connector. MPA Electrical Part Number 13986 matches the listed electrical and pulley specifications to support proper charging-system replacement on 2001-2006 BMW 325Ci, 2001-2006 BMW 330Ci, 2001-2005 BMW 325i, and 2003-2005 BMW Z4 models. This part cross-references BBB Industries 13986 for the same application.

What It Helps Address

• Battery warning light caused by alternator output loss
• Low charging voltage during driving
• Dim lights or electrical instability from weak charging performance
• Alternator noise or bearing-related charging concerns
• Failure on BMW charging systems using the Bosch 120 amp oval-connector setup

Installation Notes

Verify the vehicle uses the Bosch 120 amp alternator with oval connector before installation. Confirm pulley groove count, rotation, and connector style against the original unit. This alternator is listed for BMW 325Ci, 330Ci, 325i, and Z4 applications with the noted fitment details, including 2001-2006 BMW 325Ci, 2001-2006 BMW 330Ci, 2001-2005 BMW 325i, and 2003-2005 BMW Z4.

Quality Assurance

MPA Electrical remanufactured components are built to meet the listed application specifications for electrical replacement service. Part Number 13986 is remanufactured for the stated BMW fitments and Bosch-based charging-system requirements.