| 840721 | Spark-ignition reciprocating or rotary internal combustion piston engines. -Outboard motors |
| 840729 | Spark-ignition reciprocating or rotary internal combustion piston engines. -Other |
| 840731 | Spark-ignition reciprocating or rotary internal combustion piston engines. -Of a cylinder capacity not exceeding 50 cc |
| 840732 | Spark-ignition reciprocating or rotary internal combustion piston engines. -Of a cylinder capacity exceeding 50 cc but not exceeding 250 cc |
| 840733 | Spark-ignition reciprocating or rotary internal combustion piston engines. -Of a cylinder capacity exceeding 250 cc but not exceeding 1,000 cc |
| 840734 | Spark-ignition reciprocating or rotary internal combustion piston engines. -Of a cylinder capacity exceeding 1,000 cc |
| 840790 | Spark-ignition reciprocating or rotary internal combustion piston engines. -Other engines |
| 840810 | Compression-ignition internal combustion piston engines (diesel or semi-diesel engines).-Marine propulsion engines |
| 840820 | Compression-ignition internal combustion piston engines (diesel or semi-diesel engines).-Engines of a kind used for the propulsion of vehicles of Chapter 87 |
| 840890 | Compression-ignition internal combustion piston engines (diesel or semi-diesel engines).-Other engines |
| 840910 | Parts suitable for use solely or principally with the engines of heading 84.07 or 84.08.-For aircraft engines |
| 840991 | Parts suitable for use solely or principally with the engines of heading 84.07 or 84.08.-Suitable for use solely or principally with spark-ignition internal combustion piston engines |
| 840999 | Parts suitable for use solely or principally with the engines of heading 84.07 or 84.08.-Other |
| 841011 | Hydraulic turbines, water wheels, and regulators therefor.-Of a power not exceeding 1,000 kW |
| 841012 | Hydraulic turbines, water wheels, and regulators therefor.-Of a power exceeding 1,000 kW but not exceeding 10,000 kW |
