Compatible with KOMATSU, NIKKO and many more… Please check the OEM part number of your original unit to ensure compatibility. Replaces: KOMATSU: 600-821-3840 600-821-3850, NIKKO: 0-33000-5480, ITEM DESCRIPTION: ALTERNATOR, UNIT TYPE: NIKKO, VOLTAGE: 24, CURRENT: 15, FAN: EXTERNAL, REGULATOR: INTERNAL, PULLEY: V-BELT, SLOTS: 1, POLARITY: NEGATIVE, REGULATOR POSITION: 11:00, B+ TERMINAL: M5-0.80, WEIGHT: 10.25 LBS / 4.66 KG … Fully Warrantied One Year Computer Tested for Consistent Quality and Unmatched Reliability Alternator – Voltage: 24 Volt Amperage Current: 15 A Source: Aftermarket