The Toro 120-4433 Lawn Mower Voltage Regulator helps maintain a controlled electrical voltage for compatible lawn mower and lawn tractor systems. It regulates voltage produced by the charging system before it reaches connected electrical components, supporting stable operation and helping protect the electrical system from excessive voltage. Designed for compatible Toro equipment, thi... https://www.wholetoolbox.com/toro-120-4433-lawn-mower-voltage-regulator/120-4433.html