Section 17 VEHICLES, AIRCRAFT, VESSELS AND ASSOCIATED TRANSPORT EQUIPMENT 87 Vehicles other than railway or tramway rolling-stock, and parts andaccessories thereof 87 08 PARTS AND ACCESSORIES OF THE MOTOR VEHICLES OF 87.01 TO 87.05 87 08 99 Other: Commodity Code Description 87 08 99 20 Compressed Natural Gas (CNG) systems 87 08 99 40 Other, for tractors 87 08 99 90 Other