Higher output (+ 20% = + 10 amp) version of BMW-ALT1/020.
Vehicle Manufacturer: BMW
Application: BMW R Series, 2001-2004
Make/Model: BMW : R1150RT, R1200C
Model Years: 2001 to 2004
Vehicle Mfg. Part #: 13 31 2 306 955
Power Rating: 14 V ; Idle 518 watts / 37 amps ; Maximum 840 watts / 60 amps
Original Equipment: 
BOSCH
Technical Information: Brand new OE BOSCH 60 amp alternator. Will retrofit earlier 50 amp model Part # BMW-ALT1/020 - see for more information regarding rotor adaptation