Remy 12887 Alternator

Remanufactured BMW Alternator for 2006-2007

The Remy Premium Remanufactured alternator, part number 12887, is a 12-volt charging system component built for select BMW 3 Series and 5 Series applications. It delivers 170 amps with an internal voltage regulator, internal fan, clockwise rotation, and a pulley included for OE-style replacement service.

Remy’s Premium Remanufactured line focuses on remanufactured electrical components restored to meet application-specific requirements. This alternator is a Valeo unit replacement for BMW models that use the listed charging system configuration.

Key Features

• 170 amp output for BMW charging system service
• 12-volt alternator with internal voltage regulator
• Internal fan design for integrated cooling
• Pulley included for direct replacement setup
• Clockwise rotation
• Remanufactured to OE manufacturer specifications from Valeo-based applications
• Part number 12887 for catalog and cross-reference lookup

Detailed Description

This Remy alternator 12887 is built for BMW vehicles that require a 170 amp, 12-volt charging unit with an internal regulator and clockwise rotation. It is listed for 2006-2007 BMW 525i, 525xi, 530i, and 530xi, plus 2006 BMW 323i, 325i, 325xi, 330i, and 330xi. If you are replacing a worn BMW alternator on a 2006 BMW 325i or a 2007 BMW 530xi, this unit matches the documented fitment and electrical configuration.

This part cross-references BMW OE numbers 12-31-7-521-178 and 12-31-7-525-376 for the same application.

What It Helps Address

• Battery warning light caused by low charging output
• Dim lights or electrical instability at idle
• Charging system failure from a worn alternator
• Voltage irregularities affecting vehicle electronics
• Starting issues related to insufficient battery recharge

Installation Notes and Tips

Verify the existing alternator matches the listed 170 amp, 12-volt, internal regulator, clockwise-rotation configuration before installation. Confirm pulley style and connector layout against the removed unit and vehicle service information for your BMW 525i, 530i, 325i, or related application. Inspect the belt, tensioner, and charging cables during replacement to help avoid repeat charging-system faults.

Quality Assurance

Remy Premium Remanufactured electrical components are remanufactured for application-specific fit and function. This alternator is based on an OE manufacturer Valeo unit and is cataloged under part number 12887 for accurate identification.