The SM 4670 is a precision-engineered Starter Drive (Self Drive) designed specifically for the Ford Fiesta (including the Classic, Duratec petrol, and Duratorq diesel variants). Utilizing a robust L-Type architecture, this 10-tooth pinion is optimized for the high-speed cranking cycles required by Ford’s high-compression engines. It serves as a direct replacement for original units, ensuring smooth, quiet, and reliable ignition that meets Ford's rigorous performance standards.