This directory combines historical reference rows with separately labelled national sources. Read the source title, observation date, printed units and conditions on each entry. National source observations do not establish all measures applicable to a shipment.

United States Customs Tariff for HS Code 840710

Engines; for aircraft, spark-ignition reciprocating or rotary internal combustion piston engines

USITC 2026 HTS Revision 19

26,806 official source entries are searchable. Checked 2026-09-22; edition published 2026-09-15.

Printed tariff and statistical lines from this edition, separate from historical WITS averages. Blank duty cells are not a confirmed zero. Review the parent tariff line, general and chapter notes, chapter 99, origin, exclusions, quotas and additional duties. No shipment total or special-rate eligibility is calculated. The edition publication date is not a line-level effective date.

Official schedule and source documentation

Official entries matching 840710

8407.10.00

Spark-ignition reciprocating or rotary internal combustion piston engines:

Aircraft engines

Column 1 — General: Free
Column 1 — Special (eligibility required): No amount printed on this row; not a confirmed zero.
Column 2: 35%

Official source for this code

8407.10.00.20

Spark-ignition reciprocating or rotary internal combustion piston engines: › Aircraft engines › For use in civil aircraft: › New:

Less than 373 kW

Source units: No.

Column 1 — General: No amount printed on this row; not a confirmed zero.
Column 1 — Special (eligibility required): No amount printed on this row; not a confirmed zero.
Column 2: No amount printed on this row; not a confirmed zero.

Parent tariff line 8407.10.00 — read its printed duties and notes

Aircraft engines

Column 1 — General: Free
Column 1 — Special (eligibility required): No amount printed.
Column 2: 35%

Open parent line in the official schedule

Official source for this code

8407.10.00.40

Spark-ignition reciprocating or rotary internal combustion piston engines: › Aircraft engines › For use in civil aircraft: › New:

373 kW or over

Source units: No.

Column 1 — General: No amount printed on this row; not a confirmed zero.
Column 1 — Special (eligibility required): No amount printed on this row; not a confirmed zero.
Column 2: No amount printed on this row; not a confirmed zero.

Parent tariff line 8407.10.00 — read its printed duties and notes

Aircraft engines

Column 1 — General: Free
Column 1 — Special (eligibility required): No amount printed.
Column 2: 35%

Open parent line in the official schedule

Official source for this code

8407.10.00.60

Spark-ignition reciprocating or rotary internal combustion piston engines: › Aircraft engines › For use in civil aircraft:

Used or rebuilt

Source units: No.

Column 1 — General: No amount printed on this row; not a confirmed zero.
Column 1 — Special (eligibility required): No amount printed on this row; not a confirmed zero.
Column 2: No amount printed on this row; not a confirmed zero.

Parent tariff line 8407.10.00 — read its printed duties and notes

Aircraft engines

Column 1 — General: Free
Column 1 — Special (eligibility required): No amount printed.
Column 2: 35%

Open parent line in the official schedule

Official source for this code

8407.10.00.90

Spark-ignition reciprocating or rotary internal combustion piston engines: › Aircraft engines

Other

Source units: No.

Column 1 — General: No amount printed on this row; not a confirmed zero.
Column 1 — Special (eligibility required): No amount printed on this row; not a confirmed zero.
Column 2: No amount printed on this row; not a confirmed zero.

Parent tariff line 8407.10.00 — read its printed duties and notes

Aircraft engines

Column 1 — General: Free
Column 1 — Special (eligibility required): No amount printed.
Column 2: 35%

Open parent line in the official schedule

Official source for this code

WITS 2023 historical MFN average

Reported average: 0%.

Source year: 2023. Classification: HS 2022 (H6). Checked 2026-09-14.

National lines included: 1 of 1. Excluded from the average: 0.

Reported ad-valorem range: 0%–0%.

Reported historical ad-valorem MFN simple average for 2023, not a national tariff schedule. No preferential rates, additional duties, VAT, excise or import permissions are determined.

Not a current 2026 national duty. The HS6 average does not determine the duty of a particular national subdivision, origin or shipment.

WITS observation for this code and year

UN Comtrade H6 descriptions (HS 2022)

WITS API definitions: reported averages and excluded national lines

Direct HS code answer for United States

United States HS Code 840710: 0.00% (2023 MFN average)

The source reports an indicative HS6 MFN average of 0.00% (2023 MFN average) for Engines; for aircraft, spark-ignition reciprocating or rotary internal combustion piston engines.Source status: not assessed. Verify the exact national tariff line, origin treatment, taxes, restrictions, and current customs guidance before using this information in a declaration.

Browse chapter 84 Search parent HS 840710 Request import report

Customs tariff summary

Country: United States
HS / tariff code: 840710
Description: Engines; for aircraft, spark-ignition reciprocating or rotary internal combustion piston engines
Chapter: 84 —
Heading: 8407
Subheading: 840710
Indicative MFN HS6 average: 0.00% (2023 MFN average)
VAT / tax: Check local VAT and excise rules for the import destination.
Unit / basis: Not listed in this tariff line
Source / vintage: WITS / UNCTAD TRAINS — 2023 MFN HS6 reference

Historical MFN average

0.00% (2023 MFN average)

Import permission

not assessed

Import planning

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Details

HS Code: 840710
Chapter: 84 —
Heading: 8407
Subheading: 840710

Compare HS code 840710 across GCC countries

Each destination shows its own source label. Oman uses its national schedule; Qatar and UAE entries may cite their separately published references and unresolved exceptions. Other entries retain the historical GCC reference. National codes, duty notes, restrictions and tax treatment can differ; verify with the destination customs authority.

Saudi ArabiaSearch parent HS 840710 United Arab EmiratesSearch parent HS 840710 OmanSearch parent HS 840710 QatarSearch parent HS 840710 KuwaitSearch parent HS 840710 BahrainSearch parent HS 840710

Related HS Codes (Heading 8407)

HS Code	Description	Duty
840721	Engines; outboard motors for marine propulsion, spark-ignition reciprocating or rotary internal combustion piston engines	0.00% (2023 MFN average)WITS 2023 historical MFN average
840729	Engines; for marine propulsion, (other than outboard motors), spark-ignition reciprocating or rotary internal combustion piston engines	0.00% (2023 MFN average)WITS 2023 historical MFN average
840731	Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity not exceeding 50cc	0.00% (2023 MFN average)WITS 2023 historical MFN average
840732	Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity exceeding 50cc but not exceeding 250cc	0.00% (2023 MFN average)WITS 2023 historical MFN average
840733	Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity exceeding 250cc but not exceeding 1000cc	0.63% (2023 MFN average)WITS 2023 historical MFN average
840734	Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity exceeding 1000cc	1.25% (2023 MFN average)WITS 2023 historical MFN average
840790	Engines; rotary internal combustion piston engines, for other than aircraft or marine propulsion	0.00% (2023 MFN average)WITS 2023 historical MFN average

Data source: WITS/UNCTAD TRAINS (MFN 2022). Values are indicative HS6 MFN averages, not shipment-specific applied rates. Import permission and restrictions are not assessed. Historical reference rates exclude VAT, excise and other national measures. Separate national entries preserve the columns printed by their source; these are not a complete shipment assessment. Full disclaimer.