Indian vehicle operating conditions are extreme in terms of water, dust, and oil environment. Indian commercial vehicle market segment is more populated in the engine capacity range 3-7Lt. The system component, Starter motor with closed end shield type is preferred for Indian conditions. Bosch India group has a starter with nose type, -open end shield-, for the commercial vehicle segment, which is not suitable for dusty environment. Closed end shield starter requires new design of engagement system – overhang pinion type. In this project, one-stage overhang pinion type engagement system design for commercial vehicle starter is proposed and integrate it with motor. The target for the onestage overhang pinion type starter motor is to achieve a secure engagement for minimum immersion depth and meet speed criteria at start of immersion. The new design of one-stage overhang pinion type engagement system is achieved by designing the mechanical parts and simulating for dynamic pinion path analysis for the secure engagement conditions. The over-hang pinion type engagement system is developed and integrated with motor. This Starter is tested and results are verified for performance specific.