| 8401.40 | 000 | Parts of nuclear reactors |
| 84.02 | | Steam or other vapour generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers. |
| 84.02 | | Steam or other vapour generating boilers : |
| 8402.11 | 000 | Watertube boilers with a steam production exceeding 45 t per hour |
| 8402.12 | 000 | Watertube boilers with a steam production not exceeding 45 t per hour |
| 8402.19 | 000 | Other vapour generating boilers, including hybrid boilers |
| 8402.20 | 000 | Super-heated water boilers |
| 84.03 | | Central heating boilers other than those of heading 84.02. |
| 8403.10 | 000 | Boilers |
| 84.04 | | Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units. |
| 8404.10 | 000 | Auxiliary plant for use with boilers of heading 84.02 or 84.03 |
| 8404.20 | 000 | Condensers for steam or other vapour power units |
| 84.05 | | Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers. |
| 8405.10 | 000 | Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers |
| 84.06 | | Steam turbines and other vapour turbines. |
| 8406.10 | 000 | Turbines for marine propulsion |
| 8406.10 | | Other turbines : |
| 8406.81 | 000 | Of an output exceeding 40 MW |
| 8406.82 | 000 | Of an output not exceeding 40 MW |
| 84.07 | | Spark-ignition reciprocating or rotary internal combustion piston engines. |
| 8407.10 | 000 | Aircraft engines |
| 8407.10 | | Marine propulsion engines : |
| 8407.29 | 000 | Other |
Harmonized Tariff Schedule of Japans inquiry: /etc/passwd
