Glixal ATMT1-143 Durable 5-Pin GY6 125cc 150cc Voltage Regulator Rectifier 152QMI 157QMJ Scooter Moped ATV Go Kart 12 Volt Regulator Plug Style: 5-pin, male Fit GY6 125cc - 150cc 157QMJ Engine Prevents Overcharging Battery. Dissipates excess voltage and heat