The SM 7845 Alternator Rotor Assembly is a high-performance electrical component specifically engineered for the Lucas-style (L. Type) charging systems found in the Tata Sumo Grande (DICOR/MKII) and the Mahindra Marazzo. Built to O.E. (Original Equipment) Specifications, this rotor is designed to handle the high electrical loads of modern common-rail diesel engines, including complex ECU requirements and high-wattage climate control systems.