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 09 PARTS SUITABLE FOR USE SOLELY OR PRINCIPALLY WITH THE ENGINES OF 84 09 91 PARTS FOR USE WITH SPARK-IGNITION ENGINES FOR ROAD MOTOR VEHICLES Commodity Code Description 84 09 91 10 PARTS FOR USE WITH SPARK-IGNITION ENGINES FOR ROAD MOTOR VEHICLES 84 09 91 20 PARTS FOR THE USE WITH SPARK IGNITION ENGINES FOR MARINE CRAFT 84 09 91 90 PARTS:OTHER,FOR USE WITH SPARK-IGNITION INTERNAL COMBUSTION PISTON ENGINES