BBB Industries 13904 Alternator

Remanufactured Alternator for Volkswagen Golf and Jetta

BBB Industries REMAN ALTERNATOR 13904 is a 12-volt, 120-amp replacement alternator built for select Volkswagen Golf and Volkswagen Jetta applications that require Bosch-style charging system specifications. It features an internal voltage regulator, serpentine belt pulley, and clockwise rotation for direct-fit service on the listed vehicles.

Key Features

• 120 amp amperage rating for OE-style charging output
• 12V electrical system with internal voltage regulator
• OE manufacturer reference: Bosch
• Serpentine belt pulley with 7 grooves included
• Conventional pulley design, 2-3/8 in. outside diameter
• Air-cooled unit with internal fan
• Negative polarity and clockwise rotation
• Plug clock position: 1
• BBB Industries REMAN ALTERNATOR line

Product Details

Part number 13904 is a remanufactured alternator from BBB Industries’ REMAN ALTERNATOR line, built for charging-system replacement where Bosch OE specifications are required. This unit is configured with a pulley included, internal regulation, and the correct serpentine drive setup for the listed Volkswagen applications. It is a practical choice for drivers and repair shops servicing Volkswagen Golf and Jetta models that need a 120-amp alternator replacement.

This part cross-references Bosch-style applications such as 0-124-515-011 and 021-903-025K for the same application.

Vehicle Fitment

• Fits 1999-2005 Volkswagen Golf, N/A; alternator fits models requiring 120 amps; reman alternator.
• Fits 1999-2004 Volkswagen Jetta, N/A; alternator fits models requiring 120 amps; reman alternator.

Common Replacement Reasons

• Battery warning light or charging system fault
• Low system voltage during driving or idle
• Dim lights or electrical accessories operating inconsistently
• Alternator bearing noise or pulley wear
• Failed internal regulator or reduced output

Installation Notes

Verify the vehicle’s required amperage, pulley groove count, plug clock position, rotation direction, and OE reference before installation. Confirm the serpentine belt routing and electrical connector match the original unit on the Volkswagen Golf or Volkswagen Jetta application. Always inspect the battery, belt condition, and charging circuit after replacement.

Quality Assurance

BBB Industries remanufactured electrical components are built to meet application-specific replacement needs for service and repair use. Part number 13904 is remanufactured to match the listed Bosch-style fitment requirements for the confirmed Volkswagen applications.