SEG Automotive 0121.715.116 180A Alternator for BMW 3 Series 5 Series 1 Series

The SEG Automotive 0121.715.116 is a new OEM-grade 180-amp alternator engineered for BMW inline-6 applications. Manufactured by SEG Automotive — a Bosch spin-off and tier-one global supplier of charging and starting systems — this unit is a direct, drop-in replacement designed to restore original charging system performance without modification.

Key Specifications:

• Voltage: 12V
• Amperage: 180A
• Rotation: Clockwise (CW)
• Regulator Type: Internal (IR)
• Fan Type: Internal (IF)
• Pulley: 7-Groove, 49mm OD
• Case Outside Diameter: 149mm
• Plug Code: 063 (2-Pin Plug)
• Battery Terminal: M8
• Mounting Holes: 4
• Unit Series: PMA

OEM & Cross-Reference Part Numbers:

• BMW OEM: 12317558219, 12317558220, 12317557789
• SEG / Bosch: 0121.715.116, 0121.715.016
• Aftermarket: 11302, 11302N, ABO0394, AL0850X, LRA03107, Valeo 440956

This alternator is built to OEM specifications and delivers consistent, stable electrical output to power on-board systems and maintain battery charge under all operating conditions. Its internal fan design provides efficient cooling while keeping the unit compact. As a new — not remanufactured — component, it arrives ready for installation with no core return required.