This Rectifier (Voltage Regulator) applies to (and is not limited to) 150cc standard, 150cc GY6 engines, 200cc and 250cc engines. It is most commonly used for 150cc scooters and automatic ATVs, 200cc and 250cc ATVs. This part has a male connector with 4 pin configuration. Total case dimensions are 6.9cm x 5.8cm x 2.5cm and the total wire length is 15.5cm.