Fitment: Voltage regulator is specially designed as a replacement for Kubota Tractor models B4200, B5100, B6000, B7100, RS1104, J5000; reference part number is 66611-55250. Waterproof and Shockproof: The rectifier is constructed with high-strength materials, offering excellent waterproof performance, surface mount technology, strong shock resistance, and enhanced anti-interference capability. Improved Engine Performance: The voltage regulator delivers stable voltage output, helping to enhance low-speed torque, improve engine power, increase vehicle speed, and provide more effective climbing ability. Reduced Fuel Consumption: The rectifier improves ignition efficiency, promoting more complete fuel combustion, enhancing fuel efficiency, and reducing overall fuel consumption. Enhanced Headlight Brightness: This replacement voltage stabilizer helps correct dim or weak lighting, resulting in noticeably brighter headlights.