The SM 4620 is an industrial-strength Starter Drive (Self Drive) specifically engineered for 24V heavy-duty commercial vehicles, most notably the Tata T.C. (Turbo Charged) series of trucks and buses. Featuring a robust L-Type architecture and a high-torque 10-tooth pinion, this drive is built to handle the extreme cranking pressures of large-displacement, turbocharged diesel engines used in logistics and transport.