Aftermarket automobile engine exhaust systems comprised of pipes, collectors, mufflers, and particulate traps; Engine fuel pumps; Exhaust silencers for engines; Exhaust system temperature, pressure, and flow sensors being parts of internal combustion engines; Ignition coils for automotive engines; Land vehicle parts, namely, spark plug wires; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems being sold as a unit with manufacturing machines; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems sold as an integral component of injection molding machines; Sparking plugs for automotive engines