Apparatus for conveying exhaust fumes from internal combustion engines, namely, engine exhaust systems comprised of pipes, collector and muffler, catalytic converters, silencers and structural parts therefor; oil filters for motors and engines; filters being parts of engines for cleaning air; air filters for motors and engines; catalytic converters; silencers; emission reduction units for motors and engines, namely, catalytic converters and particulate filters for diesel engines; diesel parti...