DIESEL ENGINES AND PARTS THEREOF, NAMELY, CYLINDER BLOCKS, CYLINDER HEADS, CRANKSHAFTS, FLYWHEELS, CONNECTING RODS, CAMSHAFTS, FUEL PUMPS, FUEL FILTERS, AIR CLEANERS, AIR SILENCERS, OIL PUMPS, OIL FILTERS, WATER PUMPS AND FANS FOR USE IN LAND VEHICLES, NAMELY TRUCKS AND BUSES