MPA Electrical 15120 Alternator

Remanufactured Bosch Alternator for Audi and Volkswagen

MPA Electrical Part Number 15120 is a remanufactured 12-volt alternator built for select Audi A4, Audi A4 Quattro, and Volkswagen Passat applications with a 90 amp Bosch charging system. It features an internal regulator, internal fan, clockwise rotation, and a 5-groove serpentine pulley for direct-fit replacement in the listed vehicles.

This remanufactured MPA Electrical alternator is part of the brand’s remanufactured line, offering a service replacement for vehicles equipped with the Bosch alternator configuration shown below. Part number 15120 is specified for 1999-2005 Audi and Volkswagen models with the matching 90 amp Bosch setup.

Key Features

• 90 amp output for 12-volt charging systems
• Internal voltage regulator
• Internal cooling fan
• 5-groove serpentine pulley
• Clockwise rotation
• Built for Bosch alternator applications
• Remanufactured replacement unit

Fitment Details

• Fits 2001-2005 Volkswagen Passat, N/A, w/ 90 amp Bosch alt.; Remanufactured
• Fits 2000-2005 Volkswagen Passat, N/A, w/ 90 amp Bosch alt., w/ 5S pulley; Remanufactured
• Fits 2001 Audi A4, N/A, w/ 90 amp Bosch alt., w/ 56mm pulley; Remanufactured
• Fits 2000-2001 Audi A4, N/A, Optional, w/ 90 amp Bosch alt.; Remanufactured
• Fits 2001 Audi A4 Quattro, N/A, w/ 90 amp Bosch alt., w/ 56mm pulley; Remanufactured
• Fits 2001 Audi A4 Quattro, N/A, Optional, w/ 90 amp Bosch alt.; Remanufactured
• Fits 2000 Audi A4 Quattro, N/A, Optional, w/ 90 Amp Bosch Alternator; Remanufactured
• Fits 1999 Audi A4, N/A, From Chassis 8D-X-20000, Optional, w/ 90 amp Bosch alt.; Remanufactured
• Fits 1999 Audi A4 Quattro, N/A, From Chassis 8D-X-20000, Optional, w/ 90 amp Bosch alt.; Remanufactured
• Fits 1999 Volkswagen Passat, N/A, From Chassis 3B-X-150000, Optional, w/ 90 amp Bosch; Remanufactured

What This Alternator Helps Address

• Battery warning light caused by weak charging output
• Low system voltage during driving or idle
• Charging failure from a worn internal regulator
• Noise or bearing wear from an aging alternator assembly
• Electrical instability in Bosch-equipped Audi A4, Audi A4 Quattro, and Volkswagen Passat models

Installation Notes and Tips

Verify the existing alternator matches the Bosch 90 amp configuration, pulley style, and vehicle notes before installation. Confirm the application details for your Audi A4, Audi A4 Quattro, or Volkswagen Passat, especially chassis breakpoints and optional-equipment listings, to ensure the correct replacement.

This part cross-references BBB Industries 13921 for the same application.

Quality Assurance

MPA Electrical remanufactured components are rebuilt for service replacement use and specified to match the listed electrical and pulley configuration. Part number 15120 is intended for direct replacement in the confirmed Audi and Volkswagen applications shown above.