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Subheading 3 of 15 in heading 8708
Subheading 870840 · $940.6M of $6.9B
U.S. imports of gear boxes for motor vehicles (HS 870840) totaled $940.6M in July 2026, traded with 75 countries.
Importers of Gear Boxes for Motor Vehicles paid $44.8M in duties in July 2026 — an effective duty rate of 8.9% on $504.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataTransmissions and gearboxes — covering both complete units and their parts, including cast iron housings and steel forgings — are classified across eleven 10-digit lines that distinguish passenger car applications (heading 8703), commercial vehicles, and agricultural tractors. Japan and Germany are significant suppliers alongside Mexico, reflecting the concentration of advanced automatic and dual-clutch transmission manufacturing in those countries. Section 232 tariffs apply to steel and aluminum content in certain gearbox components, and importers of cast iron parts (8708407000) or steel forgings (8708407570) should assess their exposure carefully.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
21.0K shipments/mo
At the 10-digit level, gearboxes for vehicles of heading 8703 (passenger cars) are classified at 8708401110, while gearboxes for vehicles of subheadings 8701.21–8701.29, heading 8702, or heading 8704 (buses and trucks) fall under 8708401150. Agricultural tractor gearboxes have their own line at 8708403000. Importers must identify the intended vehicle type to select the correct line, as the duty treatment and any applicable trade remedy exposure can differ.
Yes. The US schedule provides a dedicated line for steel forgings used in gearboxes of vehicles under headings 8701–8705 (8708407570), distinct from cast iron gearbox parts (8708407000) and other gearbox parts (8708407580 and 8708408000). The material distinction is critical because Section 232 tariff exposure and any applicable antidumping orders may differ between cast iron and forged steel articles.
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ImportsExports
Imports
$940.6MYoY · Pro
Exports
$649.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8708401110 | Gear Boxes for Vehicles of Heading 8703 | $434.8M | 2.35% | 68.20% | $10.2M |
| 8708407580 | Parts of Gearboxes of Veh of Head 8701-8705 NESOI | $339.0M | 6.01% | 42.09% | $20.4M |
| 8708401150 | Gear Boxes Subhd 8701.21-29, Hdg 8702 or 8704 | $123.3M | 7.28% | 30.73% | $9.0M |
| 8708405000 | Gear Boxes for Vehicles, NESOI | $15.3M | 12.67% | 76.40% | $1.9M |
| 8708407570 | Steel Forgings for Gearboxes of Veh Head 8701-8705 | $14.4M | 8.63% | 35.80% | $1.2M |
| 8708403000 | Gear Boxes for Tractors Suitable for Agr Use | $6.1M | 11.19% | 82.37% | $688K |
| 8708407000 | Cast Iron Parts of Mtr Vehs, 8701to8705, Gear Box | $3.0M | 12.68% | 44.02% | $386K |
| 8708406000 | Parts of Gear Boxes of Tractors Suit for Agric Use | $2.6M | 22.38% | 103.63% | $583K |
| 8708406500 | Parts of Tractors, NESOI, Ex for Agr Use: Gear Box | $1.9M | 19.95% | 86.62% | $380K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8708401110 | Gear Boxes for Vehicles of Heading 8703 | $243.8M |
| 8708401150 | Gear Boxes Subhd 8701.21-29, Hdg 8702 or 8704 | $205.8M |
| 8708408000 | Parts and Acessories for Gear Boxes | $164.0M |
| 8708403500 | Gear Boxes for Vehicles,NESOI,of 8701 to 8705 | $36.3M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
Mexico and Japan together supply 58% of it.
customs district
destination
entry
rate provision · imports
42.9% enters free of duty; the effective duty rate is 4.76%.