Re-designed and Improved Polaris Sportsman 400 HO Voltage Regulator Rectifier Mosfet type. This is a direct fit, plug and play for east installation. This unit has a higher output capacity than the original part, and will meet or exceed all factory expectations. Reliable technology that handels up 50 amp peaks and a 30amp single phase. Rectifier has overheat protection to protect it against burn ups.