GU17712457 12311244642 V7 Sport, 750S, S3, 850T, T3, T4, T5, Convert, G5, 850 LeMans, LeMans II, CX100, LeMans III, LeMans 1000 all years LeMans IV and LeMans V, Mille, California II, SP1000, SP II, V35, V50, V50 II, V50 III, Monza, V65C, V65SP, V65TT, Lario. New alternator rotor, ~3.4 ohms for Bosch alternator systems. Updating part number 14712457.
Also fits numerous BMW Airhead R motorcycles, part number 12311244642
Note: These new production alternator rotors have an outside diameter measuring approximately 73mm and perform perfectly in Moto Guzzi and BMW motorcycles.