The SM 4530 is a premium, Original Equipment (O.E.) Grade Self Starter Rocker Assembly (Brush Holder) designed specifically for 24V JCB 3DX Backhoe Loaders and heavy-duty industrial equipment. Identified by the 340 series designation, this assembly utilizes a robust Bosch-style (B.TYPE) architecture with a high-torque 4-brush configuration. It is engineered to manage the higher voltage and intense duty cycles of 24V electrical systems used in heavy earthmoving machinery.