| 8407.90.90 | 20 | Less than 746 W | No. | | | |
| 8407.90.90 | 40 | 746 W or greater but less than 4,476 W | No. | | | |
| 8408 | | Compression-ignition internal combustion piston engines (diesel or semi-diesel engines): | | | | |
| 8408.10.00 | | Marine propulsion engines | | 2.5% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 35% |
| 8408.20 | | Engines of a kind used for the propulsion of vehicles of chapter 87: | | | | |
| 8408.20.10 | | To be installed in tractors suitable for agricultural use | | Free | | Free |
| 8408.20.20 | 00 | To be installed in vehicles of subheading 8701.20, or heading 8702, 8703 or 8704 | No. | 2.5% | Free (A*,AU,B,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 35% |
| 8408.90 | | Other engines: | | | | |
| 8408.90.10 | | To be installed in agricultural or horticultural machinery or equipment | | Free | | Free |
| 8409 | | Parts suitable for use solely or principally with the engines of heading 8407 or 8408: | | | | |
| 8409.10.00 | | For aircraft engines | | Free | | 35% |
| 8409.10.00 | 40 | For use in civil aircraft | kg | | | |
| 8409.91 | | Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines): | | | | |
| 8409.91.10 | | Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery | | Free | | 10% |
| 8409.91.10 | 40 | For vehicles of subheading 8701.20, or heading 8702, 8703 or 8704 | kg | | | |
| 8409.91.10 | 60 | For marine propulsion engines | kg | | | |
| 8409.91.30 | 00 | For vehicles of subheading 8701.20, or heading 8702, 8703 or 8704: | | | | |
| 8409.91.30 | 00 | Aluminum cylinder heads | No. kg | 2.5% | Free (A,AU,B,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 35% |
| 8409.91.50 | 10 | Connecting rods | No. kg | | | |
| 8409.91.92 | | For marine propulsion engines | | 2.5% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 35% |
| 8409.91.92 | 10 | Connecting rods | No. kg | | | |
| 8409.91.99 | 10 | Connecting rods | No. kg | | | |
| 8409.99.10 | | Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery | | Free | | 10% |
| 8409.99.10 | 40 | For vehicles of subheading 8701.20, or heading 8702, 8703 or 8704 | kg | | | |
| 8409.99.10 | 60 | For marine propulsion engines | kg | | | |
Harmonized Tariff Schedule of the United States inquiry: gaming
