MPA Electrical
Remanufactured

MPA Electrical 13931 Alternator

Brand MPA Electrical 13931
Amps 120 Amps
Clock 7:30
Fan Internal
Manufacturer Valeo
Pulley Without Pulley
Regulator Internal
Rotation Clockwise
Volts 12 Volts
Product line Remanufactured
Fits Volkswagen and Audi · 13 vehicles

Remanufactured alternator. A direct replacement for dependable charging performance.

Internal regulator. Built with an integrated regulator for simpler installation.

120 amps. Provides strong output for steady electrical demand.

Cross-references BBB Industries 13931, Valeo 439263 and 06B-903-016G for the same application. See all 7.

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Remanufactured Alternator for Audi and Volkswagen

MPA Electrical Part Number 13931 is a remanufactured 12-volt alternator built for vehicles using a 120 amp Valeo charging system. It features an internal fan, internal regulator, clockwise rotation, and a pulley-free design for the specified applications.

Compatible With Audi A4, Audi A4 Quattro, and Volkswagen Passat applications that call for the Valeo-style alternator listed below. The MPA Electrical 13931 alternator is a direct-fit charging component for select 1999-2005 models with the correct factory setup.

Key Features

  • Remanufactured alternator for charging system service
  • 120 amp output, 12 volts
  • Internal fan and internal regulator
  • Clockwise rotation with 7:30 clock position
  • Without pulley
  • Manufacturer reference: Valeo
  • Part number: 13931

Fitment Details

  • Fits 2000-2005 Volkswagen Passat, w/ 120 amp Valeo alt.; Remanufactured
  • Fits 2000-2001 Audi A4, Optional, w/ 120 amp Valeo alt.; Remanufactured
  • Fits 2000-2001 Audi A4 Quattro, Optional, w/ 120 amp Valeo alt.; Remanufactured
  • Fits 1999 Audi A4, From Chassis 8D-X-20000, Optional, w/ 120 amp Valeo alt.; Remanufactured
  • Fits 1999 Audi A4 Quattro, From Chassis 8D-X-20000, Optional, w/ 120 amp Valeo alt.; Remanufactured

What This Alternator Helps Address

  • Low battery charging caused by alternator wear
  • Dim lights or electrical instability from weak output
  • Battery warning light related to charging system failure
  • Starting issues tied to insufficient alternator performance
  • Charging system noise or inconsistent voltage delivery

Installation Notes and Tips

Verify the vehicle’s original alternator specifications before ordering, including 120 amp output, Valeo manufacturer reference, pulley configuration, and clock position. This part cross-references Valeo 439263 for the same application.

Confirm the chassis break for 1999 Audi A4 and Audi A4 Quattro applications, since fitment begins from chassis 8D-X-20000. Match the factory charging system setup on Volkswagen Passat, Audi A4, and Audi A4 Quattro models to ensure proper installation.

Quality Assurance

MPA Electrical remanufactured components are rebuilt for use in automotive charging systems and are cataloged to match the specified OE-style application details for Audi A4, Audi A4 Quattro, and Volkswagen Passat fitments.

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2005VolkswagenPassat1.8LL4N/Aw/ 120 amp Valeo alt.; Remanufactured
2004VolkswagenPassat1.8LL4N/Aw/ 120 amp Valeo alt.; Remanufactured
2003VolkswagenPassat1.8LL4N/Aw/ 120 amp Valeo alt.; Remanufactured
2002VolkswagenPassat1.8LL4N/Aw/ 120 amp Valeo alt.; Remanufactured
2001AudiA41.8LL4N/AOptional, w/ 120 amp Valeo alt.; Remanufactured
2001AudiA4 Quattro1.8LL4N/AOptional, w/ 120 amp Valeo alt.; Remanufactured
2001VolkswagenPassat2.8LV6N/Aw/ 120 amp Valeo alt.; Remanufactured
2001VolkswagenPassat1.8LL4N/Aw/ 120 amp Valeo alt.; Remanufactured
2000AudiA41.8LL4N/AOptional, w/ 120 amp Valeo alt.; Remanufactured
2000AudiA4 Quattro1.8LL4N/AOptional, w/ 120 amp Valeo alt.; Remanufactured
2000VolkswagenPassat1.8LL4N/Aw/ 120 amp Valeo alt.; Remanufactured
1999AudiA41.8LL4N/AFrom Chassis 8D-X-20000, Optional, w/ 120 amp Valeo alt.; Remanufactured
1999AudiA4 Quattro1.8LL4N/AFrom Chassis 8D-X-20000, Optional, w/ 120 amp Valeo alt.; Remanufactured
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 13931Valeo — 43926306B-903-016G2542295B1913445289037335SG12B018