The SM 4463 is a precision-engineered Self Starter Rocker Assembly (Brush Holder) designed specifically for the Piaggio Ape Auto utilizing the 036 series starter motor. This model follows the Bosch-style (B.TYPE) architecture with a high-efficiency 4-brush configuration. It is built to support the high-torque cranking requirements of the Ape’s diesel and alternative fuel engines, providing a reliable electrical path for consistent commercial operation.