This industry comprises establishments primarily engaged in manufacturing turbines, power transmission equipment, and internal combustion engines (except automotive gasoline and aircraft). Manufacturing motor vehicle power transmission equipment--are classified in Industry 336350, Motor Vehicle Transmission and Power Train Parts Manufacturing; Manufacturing aircraft engines and aircraft power transmission equipment--are classified in Industry 33641, Aerospace Product and Parts Manufacturing; Manufacturing ball and roller bearings--are classified in Industry 33299, All Other Fabricated Metal Product Manufacturing; Manufacturing automotive engines (except diesel)--are classified in Industry 33631, Motor Vehicle Gasoline Engine and Engine Parts Manufacturing; and Manufacturing electric power transmission, electric power distribution equipment, generators, or prime mover generator sets (except turbines)--are classified in Industry 33531, Electrical Equipment Manufacturing.
