Aftermarket automobile engine exhaust systems comprised of pipes; air-intake tubes and filters for after-market installation of automotive engines; air compressors for vehicles; air distribution units for pneumatically driven pumps; automotive exhaust pipe; compressed air machine components, namely, cylinders, valves and air grips; compressed air machines; compressed air pumps; compressors as parts of machines, motors and engines; cylinders for motors and engines; engines and motors for model vehicles, aircraft and boats; exhaust pipes for land vehicles; gas diverters consisting of a pump, storage and refilling tank, pre-heater, vaporizer, recuperator, condenser and valves; particulate air filters for exhaust systems for internal combustion engines; pneumatic controls for machines, motors and engines; pneumatic pumps; valves being parts of machines operated pneumatically and by air; valves being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines; air compressors; air filters for pneumatic controls being part of machines; air filters for automobile engines; air filters for motorcycle motors and engines; air filters for vehicle motors and engines; engine exhaust systems comprised of pipes, collector and muffler; machine parts, namely, cylinders; parts for compressed-air machines, namely, pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems sold as an integral component of injection molding machines; parts for compressed-air tools, namely, brakes, filters, hoses, pipes, couplings valves, switches, compressors, clamping tools and injectors; vehicle pneumatic and hydraulic compressors; gas filters for motors and engines