Remy 12281 Alternator

Remanufactured BMW Alternator for 120-Amp Charging

The Remy Premium Remanufactured alternator, part number 12281, is a 12-volt charging system replacement built around Bosch OE specifications. It features a 120-amp amperage rating, internal fan, internal voltage regulator, clockwise rotation, and a pulley included for direct-fit service on listed BMW applications.

Remy Premium Remanufactured focuses on OE-style electrical components rebuilt for vehicle-specific fitment and charging performance. For BMW 325Ci, 330Ci, X5, 325i, 325xi, 330i, 330xi, 525i, 530i, and Z3 applications, this alternator is specified for Bosch-unit configurations and selected models with an air duct.

• Remy Premium Remanufactured alternator, part number 12281
• 120-amp output for 12-volt charging systems
• Internal fan and internal voltage regulator
• Clockwise rotation with pulley included
• OE manufacturer reference: Bosch
• Fits BMW applications from 2001-2006, depending on model

Fitment Details

• Fits 2004-2006 BMW 325Ci, N/A; w/Air Duct; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2004-2006 BMW 330Ci, N/A; w/Air Duct; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2006 BMW X5, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2004-2005 BMW 325i, N/A; w/Air Duct; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2004-2005 BMW 325xi, N/A; w/Air Duct; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2004-2005 BMW 330i, N/A; w/Air Duct; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2004-2005 BMW 330xi, N/A; w/Air Duct; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 325Ci, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 325i, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 325xi, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 330Ci, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 330i, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 330xi, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 525i, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2003 BMW 530i, N/A; Bosch Unit; 120 Amps; Premium Remanufactured
• Fits 2001-2002 BMW Z3, N/A; Bosch Unit; 120 Amps; Premium Remanufactured

What This Alternator Helps Address

• Battery warning light caused by low charging output
• Dim headlights or interior lights from weak alternator performance
• Repeated battery discharge after driving
• Charging system faults on BMW models with Bosch-unit alternators
• Electrical instability from a failing 12-volt alternator

Installation Notes and Tips

Confirm the vehicle uses the Bosch-unit application listed for part number 12281 before installation. Match the amperage rating, rotation direction, and pulley configuration to the original unit, and verify whether the vehicle requires the air-duct configuration shown in the fitment notes. This part cross-references Bosch 0-124-515-050 for the same application.

Quality Assurance

This Remy Premium Remanufactured alternator is rebuilt to OE-based specifications for the listed BMW charging system applications. The remanufactured design, internal regulation, and Bosch OE reference support direct replacement selection for service work on BMW 325Ci, 330Ci, X5, 325i, 325xi, 330i, 330xi, 525i, 530i, and Z3 models.