The SM 8485 is a heavy-duty Alternator Rectifier Assembly Set designed specifically for Ashok Leyland commercial vehicles (including the Dost, 1612, 2518, and Boss series). This "Set" includes both the Positive and Negative L-Type Diode Plates, engineered to handle the massive 24V or high-amperage 12V charging requirements of large diesel engines. It is a direct replacement for high-output Lucas-TVS and compatible industrial alternators.