Exhaust pipes for land vehicles; Exhaust silencers for engines; Exhausts for motors and engines; Aftermarket automobile engine exhaust systems comprised of pipes, collectors, mufflers, brackets, tips, etc.; Automotive exhaust pipe; Catalytic converter units for vehicle exhausts; Engine exhaust system comprised of a particulate trap; Engine exhaust systems comprised of pipes, collector and muffler; Engine exhaust tips; Headers as part of vehicle exhaust system; Intake and exhaust air flow vane assembly device for use in an internal combustion engine; Mounting brackets adapted for exhaust systems for internal combustion engines; Mounting fasteners adapted for exhaust systems for internal combustion engines; Mounting hangers adapted for exhaust systems for internal combustion engines; Nitrogen oxide traps for exhaust systems being parts of internal combustion engines; Particulate air filters for exhaust systems for internal combustion engines; Silencers as part of vehicle exhaust systems; Sub-micron fuel filters for diesel exhaust fluid