BBB Industries 13986 Alternator

BMW Charging System Replacement

BBB Industries REMAN ALTERNATOR 13986 is a remanufactured 12-volt alternator built for select BMW applications with Bosch unit specifications. It delivers 120 amps of output and uses an internal voltage regulator, serpentine pulley, and clockwise rotation for direct-fit charging system service.

Compatible with BMW 325Ci, 330Ci, 325i, 325xi, 330i, 330xi, and Z4 applications listed below, this alternator is a practical replacement when the original charging unit is no longer maintaining proper system voltage. Part number 13986 is also referenced for OE-style service on the same application family.

Key Features

• 120 amp output for standard charging system requirements
• 12-volt alternator with internal voltage regulator
• Bosch OE manufacturer specification
• Serpentine belt pulley with 6 grooves included
• Clockwise rotation with negative polarity
• Air-cooled design with internal fan
• 2 o’clock plug clock position
• Outside pulley diameter: 2 in. (50 mm)

Detailed Product Overview

BBB Industries REMAN ALTERNATOR 13986 is a remanufactured charging component for BMW vehicles equipped with the Bosch-style alternator configuration shown in the fitment data. The unit is built with a conventional pulley, internal regulator, and air cooling to match the electrical and mechanical requirements of the original application. Use part number 13986 when replacing a worn or failing alternator on BMW 325Ci, 330Ci, 325i, 325xi, 330i, 330xi, or Z4 models listed here.

This part cross-references Bosch 0-124-515-105 for the same application.

What This Alternator Helps Address

• Battery warning light caused by low charging output
• Dim lights or electrical accessories operating inconsistently
• Battery drain from a failing alternator
• Charging voltage that falls outside normal range
• Noise or wear associated with an aging alternator assembly

Installation Notes and Tips

• Fits 2004-2006 BMW 325Ci, N/A; wo/Air Duct; Bosch Unit; Std; 120 Amps; REMAN ALTERNATOR
• Fits 2004-2006 BMW 330Ci, N/A; wo/Air Duct; Bosch Unit; Std; 120 Amps; REMAN ALTERNATOR
• Fits 2004-2005 BMW 325i, N/A; wo/Air Duct; Bosch Unit; Std; 120 Amps; REMAN ALTERNATOR
• Fits 2004-2005 BMW 325xi, N/A; wo/Air Duct; Bosch Unit; Std; 120 Amps; REMAN ALTERNATOR
• Fits 2004-2005 BMW 330i, N/A; wo/Air Duct; Bosch Unit; Std; 120 Amps; REMAN ALTERNATOR
• Fits 2004-2005 BMW 330xi, N/A; wo/Air Duct; Bosch Unit; Std; 120 Amps; REMAN ALTERNATOR
• Fits 2003-2005 BMW Z4, N/A; 120 Amp Alternator - please confirm fitment and compatibility with your vehicle before purchasing.; REMAN ALTERNATOR

Confirm the plug clock position, pulley style, and OE manufacturer match before installation. Verify belt condition and charging system connections during replacement to help ensure proper operation after service.

Quality Assurance

BBB Industries remanufactured alternators are processed to meet application-specific electrical and mechanical requirements for the listed BMW fitments. Part number 13986 is built to Bosch-style specifications for the vehicles shown above.