This Autolite starter motor core, model MZ 4166, is a reliable replacement for heavy duty engines used in tow motors manufactured between 1943 and 1961. The starter motor operates at a voltage of 6V and is designed to provide consistent performance. This Autolite starter motor core is suitable for use in a variety of heavy duty engines, making it a versatile replacement part. Its compatibility with tow motors manufactured between 1943 and 1961 ensures that it is a reliable replacement for older model vehicles. With its consistent performance and 6V voltage, this Autolite starter motor core is a must-have for anyone looking to replace a faulty starter motor.