The Bosch Ballast Resistor - 0227901014 is a high-quality electronic component designed to regulate the voltage in a vehicle's ignition system. It is specifically designed for use with Bosch ignition systems and helps to prevent damage to the ignition coil by limiting the amount of current flowing through it. This ballast resistor is made from durable materials and has been rigorously tested to ensure reliable performance. It is easy to install and is an essential component for maintaining the proper functioning of a vehicle's ignition system.