Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THEREOF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORDERS AND REPRODUCERS AND PARTS AND ACCESSORIES OF SUCH ARTICLES 84 NUCLEAR REACTORS, BOILERS, MACHINERY AND MECHANICAL APPLIANCES; PARTS THEREOF 84 83 AND SHAFT COUPLINGS (INCLUDING UNIVERSAL JOINTS). 84 83 40 GEARS & GEARING,OTHER THAN TOOTHED WHEELS... FOR ROAD MOTOR VEH. ENGINES Commodity Code Description 84 83 40 10 GEARS & GEARING,OTHER THAN TOOTHED WHEELS... FOR ROAD MOTOR VEH. ENGINES 84 83 40 20 GEARS & GEARING, OTHER THAN TOOTHED WHEELS...FOR MARINE CRAFT 84 83 40 30 GEARS & GEARING, OTHER THAN TOOTHED WHEELS...FOR AIRCRAFT ENGINES 84 83 40 90 OTHER GEARS & GEARING, OTHER THAN TOOTHED WHEELS, CHAIN SPROCKETS &....