Motive power machines other than for land vehicles and structural parts for use therewith; ignition coils for automobile engines; timing belts for engines for land vehicles; oil filters; piston rings being engine parts; fuel filters; valves being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines; cylinders for motors and engines; fuel injectors; air filters for vehicle motors and engines; mufflers for motors and engines; silencers as pa...