The SM 4708 is a precision-engineered Starter Drive (Self Drive) designed specifically for the Piaggio Ape three-wheeler range. Utilizing the specialized B.TYPE (Bosch-style) architecture, this unit features an 8-tooth pinion and a high-density 16-spline internal configuration. It is precision-calibrated for the gear-reduction starters found in Ape diesel and petrol engines, ensuring quick and reliable ignition for heavy-duty commercial use.