The SM 4479 is a heavy-duty Self Starter Rocker Assembly (Brush Holder) designed specifically for the Mahindra Maxximo series (including Plus, HD, and Minivan). Unlike the B-Type variants, this assembly utilizes the robust Lucas-style (L.TYPE) architecture with a 4-brush configuration. It is engineered to provide the high cranking torque required for the Maxximo's 909cc C动力 (C-Series) twin-cylinder diesel engine, ensuring reliable performance in demanding commercial "last-mile" delivery environments.