Air filters for vehicle motors and engines; Automobile engine valve covers; Automobile oil pans; Camshafts for vehicle engines; Connecting rods for machines, motors and engines; Cooling radiators for motors and engines; Cylinder heads for engines; Diesel-engine heating plugs; Engine injectors; Exhaust gas treatment systems for diesel engines; Exhaust mufflers for motors; Fuel filters for vehicle engines; Ignition wires for vehicle engines; Intake manifolds for internal combustion engines; Machine flywheels; Oil coolers for engines; Pulleys being parts of machines; Spark plugs; Water pumps for use in motors and engines