U.S. imports of Spark-Ignition Reciprocating Piston Engines Over 1,000 cc for Vehicle Propulsion (HS 840734) totaled $864.2M in August 2026, imported from 30 countries.
Importers of Spark-Ignition Reciprocating Piston Engines Over 1,000 cc for Vehicle Propulsion paid $24.0M in duties in August 2026, an average duty rate of 2.72% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataSpark-ignition reciprocating piston engines exceeding 1,000 cc cylinder displacement for road vehicles are a high-value automotive powertrain commodity with a deeply subdivided US tariff schedule distinguishing engine size (under vs. over 2,000 cc), condition (new vs. used), and vehicle type (passenger cars, buses, trucks, agricultural tractors). Mexico and Canada dominate supply under USMCA, which provides preferential tariff treatment for qualifying engines meeting rules-of-origin requirements. Austria and South Korea are also significant sources, reflecting the presence of major engine manufacturing facilities for European and Asian automakers. Classification hinges on precise cylinder capacity measurement and whether the engine is destined for a Chapter 87 vehicle, making technical documentation critical at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
9.2K import shipments a month
The US tariff schedule under 840734 explicitly separates new and used engines for road vehicles — for example, 8407341400 covers used engines under 2,000 cc for buses, autos, and trucks, while 8407341800 covers new engines in the same size range. Importers must accurately declare condition, as misclassification between new and used lines can result in duty underpayment and potential penalties.
Customs will expect manufacturer technical specifications or an engine data plate confirming displacement in cubic centimeters. For used engines, an independent inspection report or OEM documentation may be required. Accurate displacement figures are essential because the tariff lines bifurcate at 2,000 cc, and the applicable duty rate and any trade-remedy exposure can differ between the two size bands.
Subheading 1 of 8 in heading 8407
Subheading 840734 · $864.2M of $1.0B
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 |
|---|---|---|---|---|---|
| 8407344800 | Sp-Ig Rec Pst Eng, Rd Tr, Bus, Auto, Gt 2000cc, New | $748.9M | 0.67% | 18.33% | $5.0M |
| 8407341800 | Sp-Ig Rec Pst Eng, Rd Tr, Bus, Auto, Lt 2000cc, New | $116.5M | 15.45% | 91.84% | $18.0M |
| 8407344400 | Sp-Ig Rec Pst Eng, Rd Tr, Bus, Auto, Gt 2000cc, Used | $12.5M | 4.79% | 27.47% | $598K |
| 8407341400 | Sp-Ig Rec Pst Eng, Bus, Auto, Trks, Lt 2000cc, Used | $2.7M | 10.62% | 85.98% | $285K |
| 8407345500 | Sp-Ig Rec Pst Eng, Prop Veh Ch87, NESOI, Gt 2,000cc | $1.1M | 6.51% | 22.07% | $71K |
| 8407342500 | Sp-Ig Rec Pst Eng, Fr Prp Veh Ch87, NESOI, Lt 2,000cc | $288K | 10.64% | 68.80% | $31K |
| 8407340590 | Sp-Ig Rec Pst Eng Exc Air Agr Lt 2000cc Gt 37.3kw | $46K | 12.34% | 100.00% | $6K |
| 8407343530 | Sp-Ig Rec Pst Eng Fr Agri Trac Gt 2000cc Lt 37.3kw | — | -- | -- | -- |
| 8407340530 | Sp-Ig Rec Pst Eng for Ag Trac Lt 2000cc Lt 37.3kw | — | -- | -- | -- |
| 8407343590 | Sp-Ig Rec Pst Eng Exc Air Agr Gt 2000cc Gt 37.3kw | — | -- | -- | -- |
Sp-Ig Rec Pst Eng, Rd Tr, Bus, Auto, Gt 2000cc, New
Sp-Ig Rec Pst Eng, Rd Tr, Bus, Auto, Lt 2000cc, New
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8407342090 | Sp-Ig Eng F Rd Tr, Bus, Auto, Truck, Ov 2000 Cc | $448.2M |
| 8407345000 | Sp-Ig Rec Piston Eng, Ov 1000 Cc, NESOI | $78.8M |
| 8407342030 | Spark-Ig Eng F Rd Tr, Bus, Auto, Truck,(1000-2000 Cc) | $72.7M |
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.
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ImportsExports
Imports
$864.2MYoY · free account
Exports
$599.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $10.3B of Spark-Ignition Reciprocating Piston Engines Over 1,000 cc for Vehicle Propulsion and exported $7.7B.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Mexico and Canada together supply 77% of it.
customs district
destination
entry
rate provision · imports
72.9% enters free of duty; duty collected equals 2.72% of imports for consumption.