The SM 5397 Starter Armature is a heavy-duty electrical component specifically engineered for the high-torque Bosch-style (B-Type) starter motors used in premium SUVs and rugged commercial utility vehicles. Featuring a precision-machined 14-teeth (14T) drive gear and high-density copper windings, this armature is built to provide the massive cranking power required for the 2.2L Varicor engines and the mHawk75/D75 diesel series. The B-type configuration ensures a factory-standard fit, while the precision-balanced rotor and reinforced thermal insulation offer exceptional durability for high-compression ignition cycles in both urban and off-road environments.