SEG Automotive 997-603-012-12 Alternator 150 Amp 12V

The SEG Automotive 997-603-012-12 is a high-output 150-amp alternator designed for European performance vehicles. This 12-volt unit delivers reliable charging power to meet the electrical demands of high-performance engines and accessories.

Key Specifications:

• Output: 150 amps at 12 volts
• Rotation: Clockwise (CW)
• Pulley Configuration: 6-groove serpentine
• Regulator Position: Internal, 4:30 clock position
• Fan Location: Internal
• B+ Terminal: M8-1.25 thread
• Polarity: Negative ground

Mounting Details:

• Mounting Ear 1: M10-1.5 threaded hole, 27.9mm thickness
• Mounting Ear 2: 10.6mm unthreaded hole, 14.2mm thickness
• Mounting Ear 3: M10-1.5 threaded hole, 17.4mm thickness

This alternator is manufactured by SEG Automotive (formerly Bosch) and carries the OEM part number 997-603-012-12. It also cross-references to Bosch part number 0124.525.253. This unit replaces earlier versions including 997-603-012-00 through 997-603-012-09, providing a direct upgrade from original 120-amp and 150-amp alternators.

As a genuine OEM-quality component, this alternator features integrated voltage regulation and an internal cooling fan for reliable operation under demanding conditions. The 6-groove clutch pulley ensures smooth operation and reduced belt wear.