This 3602-3602S1 rear brake drum is a heavy-duty trailer rear brake drum for Fuwa 16-ton trailer axle, also widely used on Dongfeng tractor trailers. It forms friction surface together with brake shoes to generate braking torque for deceleration and parking. Made of high-grade alloy gray cast iron, excellent heat dissipation and resistance to thermal cracking & thermal deformation under long downhill heavy load. Precision inner bore machining for uniform friction wear. Each brake drum undergoes casting inspection and dynamic balance test before shipment to ensure stable braking. It is an essential replacement spare part for semi-trailer drum brake maintenance.