ARCO ALTERNATOR OE Replacement; 12 Volt; 55 Amps; Single Groove Belt; Internal Fan; Single Groove Pulley; Internal Regulator; Clockwise Rotation or Counter Clockwise Rotation; With Tachometer Terminal/ Indicator Light Terminal/ Remote Battery Sensing Terminal/ Excite Terminal/ 1 Inch Mounting Foot/ 3 Ear Adjustment; Fits Yamaha Marine Power Crusader