MPA Electrical 15043N Alternator

OE-Style Alternator for Audi Charging Systems

The MPA Electrical 15043N is a new 12-volt alternator built for Audi charging system applications that require 140 amps of output. It uses an internal regulator, internal fan, and a 6-groove serpentine decoupling pulley for direct-fit service on listed vehicles.

Compatible with 2009-2012 Audi A4, 2009-2012 Audi A4 Quattro, 2010-2012 Audi A5, 2010-2012 Audi A5 Quattro, 2010-2012 Audi Q5, and 2010 Audi S4 with Bosch 140 amp alternator application. Part number 15043N is also referenced for OE number 06H-903-016L.

Key Features

• 140 amp output for 12-volt charging systems
• Internal voltage regulator
• Internal cooling fan
• 6-groove serpentine decoupling pulley
• Clock position: 3:30
• Clockwise rotation
• New replacement alternator from MPA Electrical

Detailed Product Information

MPA Electrical 15043N is an alternator replacement for Audi A4, Audi A4 Quattro, Audi A5, Audi A5 Quattro, Audi Q5, and select Audi S4 applications. The unit is specified with 140 amps, 12 volts, internal regulation, and clockwise rotation, making it a direct-match option for vehicles that use the listed Bosch 140 amp alternator configuration. The 6-groove serpentine decoupling pulley supports the belt drive setup used on these applications.

This part number, 15043N, cross-references OE number 06H-903-016L for the same application.

Common Reasons for Replacement

• Battery warning light or charging system warning
• Low charging output at idle or under load
• Dim lights or electrical accessories losing power
• Noise or wear from a failing alternator pulley or bearing assembly
• Intermittent charging caused by regulator failure

Installation Notes and Tips

Verify the pulley style, clock position, amperage rating, and connector layout before installation. Confirm the vehicle uses the Bosch 140 amp alternator application noted in fitment for the 2010 Audi S4. Match the OE number 06H-903-016L and part number 15043N against the removed unit before final installation.

Quality Assurance

MPA Electrical supplies new electrical replacement components for charging and starting system service. This alternator is built to the listed specifications for fitment-focused replacement on the covered Audi applications.