Diesel-engine heating plugs; Diesel engines for tractors, agricultural machinery, construction machinery, heavy machinery, and other machinery that requires replacement parts; Diesel engines not for land vehicles; Engine bearings; Engine camshafts; Engine exhaust systems comprised of pipes, collector and muffler; Engine or motor mufflers; Engine rods; Engine timing components, namely, cam sprockets and chains; Engines not for land vehicles; Engines, other than for land vehicles; Diesel engines for machines; Exhaust gas treatment systems for diesel engines; Glow plugs for diesel engines; Industrial engines; Mechanical engine parts for land vehicles; Self-lubricating mechanical friction parts, especially of composite materials, namely, wear rings, washers, bushings, spherical bearings, bearing pads, sliding blocks and machine transmission gears all for load bearing machines, conveyors, handling trucks and machines, lifting machines, agricultural machinery, construction equipment machines and hydraulic turbines