The SM 4907 is a precision-engineered Starter Drive (Self Drive) designed for the Honda City (i-VTEC and early i-DTEC variants) and the Honda Amaze. Utilizing a DEN.TYPE (Denso-style) architecture, this unit features a 9-tooth pinion and a 10-spline internal configuration. It is specifically calibrated for the high-speed, refined cranking requirements of Honda engines, ensuring a quiet and rapid start.