U.S. imports of Spark-Ignition Reciprocating Piston Engines for Vehicles, Over 250 cc to 1,000 cc (HS 840733) totaled $41.7M in August 2026, imported from 18 countries.
Importers of Spark-Ignition Reciprocating Piston Engines for Vehicles, Over 250 cc to 1,000 cc paid $1.8M in duties in August 2026, an average duty rate of 4.56% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataHeading 840733 captures the mid-displacement range — over 250 cc to 1,000 cc — that encompasses most standard motorcycle engines, small passenger car engines, and utility vehicle powerplants. Japan leads US imports under this heading, with Mexico a significant source reflecting North American automotive supply-chain integration; engines of Mexican origin may qualify for preferential treatment under USMCA where rules of origin are satisfied. The schedule's ten lines distinguish agricultural tractor engines by power output, road-vehicle engines for buses/autos/trucks (with new/used splits), and multiple NESOI residual categories segmented by power rating.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
374 import shipments a month
The classification within heading 840733 turns on the actual vehicle application. Motorcycle engines for road use fall under the road-vehicle lines (8407332000 series), while engines for other Chapter 87 vehicles not specifically enumerated go to the NESOI lines (8407335000, 8407336040/8407336080, or 8407339040/8407339080 depending on power output and new/used status). Binding ruling requests to CBP are advisable when the end-use is genuinely ambiguous.
CBP generally looks to manufacturer invoices, engine serial number records, hours-of-use logs, and physical inspection to determine new versus used status. For used engines (8407333040), importers should retain evidence of prior installation or operation. Misclassifying a used engine as new — or vice versa — can result in penalty exposure and post-entry correction requirements.
ImportsExports
Imports
$41.7MYoY · free account
Exports
$3.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $472.2M of Spark-Ignition Reciprocating Piston Engines for Vehicles, Over 250 cc to 1,000 cc and exported $32.8M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 4 of 8 in heading 8407
Subheading 840733 · $41.7M of $1.0B
Trade Directory
List your company under HS 840733 — Spark-Ignition Reciprocating Piston Engines for Vehicles, Over 250 cc to 1,000 cc, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8407333080 | Sp-Ig Rec Pst Eng for Bus, Auto, Trck(250-1000cc)New | $34.8M | 2.78% | 22.40% | $970K |
| 8407336080 | Sp-Ig Rec Pst Eng for Veh (250-1000cc), NESOI, New | $2.5M | 15.35% | 100.00% | $378K |
| 8407339080 | Sp-Ig Rec Pst Eng for Veh Ch 87, NESOI, Gt 18.65kw | $2.1M | 20.72% | 92.72% | $436K |
| 8407339040 | Sp-Ig Rec Pst Eng for Veh Ch 87, NESOI, Lt=18.65kw | $199K | 10.00% | 100.00% | $20K |
| 8407333040 | Sp-Ig Rec Pst Eng for Bus, Auto, Trk(250-1000cc)Used | $28K | 10.00% | 100.00% | $3K |
| 8407336040 | Sp-Ig Rec Pst Eng for Veh (250-1000cc), NESOI, Used | $11K | 12.50% | 100.00% | $1K |
| 8407331030 | Sp-Ig Rec Pst Eng, Agri Tract,250-1000cc Lt 37.4kw | $4K | 0.00% | 0.00% | -- |
| 8407331090 | Sp-Ig Rec Pst Air-Col Eng Ag 250-1000cc Gt 37.3kw | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8407332000 | Spark-Ign Eng F Rd Tr, Bus, Auto, Trck,(250-1000 Cc) | $2.5M |
| 8407335000 | Spark-Ignit Recipr Piston Eng, (250-1000 Cc), NESOI | $593K |
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 · August 2026
origin
Japan and Mexico together supply 97% of it. China pays 46.5% duty; Mexico 1.4%.
customs district
destination
entry
rate provision · imports
49.1% enters free of duty; duty collected equals 4.56% of imports for consumption.