Motors, engines and other machines in this class; parts, accessories and spares for motors, engines and other machines in this class including catalytic converters; catalytic converter units for vehicles; emission control apparatus for exhausts; mufflers; diesel purifiers; exhaust apparatus; exhaust bypasses; exhaust manifolds for engines; exhaust systems for vehicles; exhausts for motors and engines; filters (parts of machines or engines); air filters being parts of engines; air filters being parts of machines; air filters for automobile engines; air filters for engines; air filters for motors; filter housings being part of engines; filter housing being parts of machines; oil filters for engines; oil filtering apparatus for engines; oil filtering apparatus for motors; oil filters for engine lubrication systems; fuel filter heads; fuel filter housings; fuel filter assemblies; liquid filtering apparatus (parts of engines or machines); manifolds; metal pipe fittings (parts of engines); metal pipes (parts of engines); metal tubes (parts of engines), camshafts for machines, engine valves, fuel injection systems for engines, fuel mixing devices, engine cooling radiators, thermostatic control valves for machines, cylinder heads for engines, machine fly-wheels, centralised oil lubricating apparatus, oil pressure pumps, timing belts (parts of machines), timing belts and chains for engines, connecting rods (parts of motors and engines), piston rings, piston pins, pistons, sealing joints (parts of engines), springs (parts of machines), crankshafts, guides for machines, valve seat rings, cylinder liners