Bosch Alternator for Porsche 928 MY 1983-1986 and 1987-1991
14V 40/115A

Bosch 0120 468 001 002 or 0120 468 004 005

(Ref.number:928 603 011 01, the later version (starting 1992?) is number 928 603 011 05 and has a 14.5 v regulator to add charging power at low rpm)