The SM 7815 Alternator Rotor Assembly is a heavy-duty electrical component specifically engineered for the Lucas-style (L. Type) charging systems used in the Mahindra Bolero Pickup and Camper series. This is a "Pump Type" rotor, featuring a precision-machined, splined rear shaft designed to drive the mechanical vacuum pump (brake booster pump) mounted on the back of the alternator. Built to withstand the rugged duty cycles of commercial transport and off-road conditions, this rotor ensures stable power delivery for the vehicle’s electrical system and consistent vacuum for the braking system.