Remy 12284 Alternator

Remanufactured Alternator for BMW M3

Restore charging performance with this Remy Premium Remanufactured alternator, part number 12284. It is built for 12-volt systems and delivers a 120 amp output rating for 2002-2006 BMW M3 applications.

Remy’s Premium Remanufactured line focuses on OE-style replacement coverage with remanufactured components that match the original Valeo design for the listed BMW M3 fitment.

Key Features

• 120 amp amperage rating for stable electrical output
• 12-volt alternator for the factory charging system
• Internal fan design for integrated cooling
• Internal voltage regulator for controlled charging performance
• Clockwise rotation
• Pulley included
• Remanufactured unit from Remy Premium Remanufactured
• OE manufacturer reference: Valeo

Detailed Description

Remy 12284 is a remanufactured alternator engineered for 2002-2006 BMW M3 models with the correct 12V electrical architecture and 120 amp output rating. As an OE-style replacement based on Valeo specifications, it is built to support the vehicle’s charging system with the proper internal regulator, internal fan, and clockwise rotation. This makes it a direct-fit choice for BMW M3 owners searching for a remanufactured alternator 120 amp, BMW M3 charging system replacement, or Remy 12284 alternator for 2002-2006 BMW M3.

This part cross-references BMW OE numbers 12-31-7-830-791 and 12-31-7-831-436 for the same application.

What It Helps Address

• Battery warning light caused by weak charging output
• Low system voltage during driving or idle
• Dim headlights or inconsistent electrical performance
• Battery drain from an alternator that is no longer maintaining charge
• Charging system noise or irregular operation tied to alternator wear

Installation Notes and Tips

Verify the vehicle’s original alternator specifications before installation, including amperage rating, rotation direction, pulley configuration, and regulator type. This unit is listed for 2002-2006 BMW M3 applications with a 120 amp output rating and N/A position fitment. Confirm belt alignment and electrical connections during replacement, and inspect the battery and charging cables so the new alternator can operate correctly.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to OE-style specifications for the listed application. Part number 12284 is intended to match the original Valeo-based design used on the BMW M3 fitment shown here.