The SM 6156 Starter EGT (Epicyclic Gear Train) Rubber Set is a heavy-duty internal dampening kit specifically engineered for Lucas-style (L. Type) reduction starter motors used in premium heavy commercial vehicles. These high-density dampers are seated within the planetary gear carrier of the Tata Prima series to absorb the massive mechanical shocks and torque spikes generated during the ignition of high-displacement Cummins and Tata engines. Manufactured from reinforced, oil-resistant synthetic elastomer, these rubbers prevent metal-to-metal impact, protecting the internal gear assembly from premature wear and tooth-shearing.