The SM 1302 is an industrial-grade Field Coil and Body assembly specifically engineered for heavy earthmoving equipment. It is designed to fit the high-torque starters used in the Hitachi Zaxis 210 and Komatsu PC 130 excavators. These machines operate in extreme environments, requiring a starter body that can withstand massive heat, dust, and sustained cranking cycles to fire up large-displacement industrial diesel engines.