The SM 1204 is a high-torque 24V starter armature designed for Nikko-type starting systems used in premium earthmoving equipment. It is the primary cranking component for the Hitachi Zaxis 210 and the Hitachi 110/120 series excavators. Featuring a 9-tooth (9T) spline, this armature is engineered to provide the high rotational force necessary to fire up industrial diesel engines in all weather conditions.