The SM 7854 Alternator Rotor Assembly is a specialized, high-performance electrical component engineered for the latest generation Bosch-style (B. Type) charging systems found in Mitsubishi Canter and Eicher Pro series trucks. This specific model features the "Inner Leaf" cooling design, where the cooling fans are integrated closer to the rotor core for superior heat dissipation in compact, high-output housings. This is a "Pump Type" rotor, equipped with the critical rear splined shaft to drive the vehicle's mechanical vacuum pump.