HTS heading 8407 · Chapter 84

HTS 8407: Spark-ignition reciprocating or rotary internal…

HTS heading 8407 covers spark-ignition reciprocating or rotary internal combustion piston engines. It has 21 tariff lines with a duty rate; the general (MFN) rates are Free (16 lines), 2.5% (5 lines).

Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.

Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.

HTS code

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Country of origin

Customs value (USD)

Mode of transport

Entry date

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Tariff lines and duty rates

HTS code	Description	General	Special	Column 2	Estimate
8407.10.00	Aircraft engines	Free		35%
	For use in civil aircraft:
	New:
8407.10.00.20	Less than 373 kW[No.]				Estimate →
8407.10.00.40	373 kW or over[No.]				Estimate →
8407.10.00.60	Used or rebuilt[No.]				Estimate →
8407.10.00.90	Other[No.]				Estimate →
	Marine propulsion engines:
8407.21.00	Outboard motors	Free		35%
8407.21.00.40	Less than 22.38 kW[No.]				Estimate →
8407.21.00.80	Other[No.]				Estimate →
8407.29.00	Other	Free		35%
8407.29.00.10	Inboard engines with outboard drive[No.]				Estimate →
	Inboard engines with inboard drive:
8407.29.00.20	Less than 746 W[No.]				Estimate →
8407.29.00.30	746 W or greater, but not exceeding 18.65 kW[No.]				Estimate →
8407.29.00.40	Exceeding 18.65 kW[No.]				Estimate →
	Reciprocating piston engines of a kind used for the propulsion of vehicles of chapter 87:
8407.31.00	Of a cylinder capacity not exceeding 50 cc	Free		35%
8407.31.00.40	Less than 746 W[No.]				Estimate →
8407.31.00.80	Other[No.]				Estimate →
8407.32	Of a cylinder capacity exceeding 50 cc but not exceeding 250 cc:
8407.32.10.00	To be installed in tractors suitable for agricultural use[No.]	Free		Free	Estimate →
8407.32.20	To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704	Free		35%
8407.32.20.40	Used or rebuilt[No.]				Estimate →
8407.32.20.80	Other[No.]				Estimate →
8407.32.90	Other	Free		35%
8407.32.90.40	Not exceeding 18.65 kW[No.]				Estimate →
8407.32.90.80	Exceeding 18.65 kW[No.]				Estimate →
8407.33	Of a cylinder capacity exceeding 250 cc but not exceeding 1,000 cc:
8407.33.10	To be installed in tractors suitable for agricultural use	Free		Free
8407.33.10.30	Not exceeding 37.3 kW[No.]				Estimate →
	Exceeding 37.3 kW:
8407.33.10.60	Air-cooled[No.]				Estimate →
8407.33.10.90	Other[No.]				Estimate →
	To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704:
8407.33.30	To be installed in vehicles specially designed for traveling on snow, golf carts, non-amphibious all-terrain vehicles and burden carriers	Free		35%
8407.33.30.40	Used or rebuilt[No.]				Estimate →
8407.33.30.80	Other[No.]				Estimate →
8407.33.60	Other	2.5%	Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%
8407.33.60.40	Used or rebuilt[No.]				Estimate →
8407.33.60.80	Other[No.]				Estimate →
8407.33.90	Other	Free		35%
8407.33.90.40	Not exceeding 18.65 kW[No.]				Estimate →
8407.33.90.80	Exceeding 18.65 kW[No.]				Estimate →
8407.34	Of a cylinder capacity exceeding 1,000 cc:
	Of a cylinder capacity not exceeding 2,000 cc:
8407.34.05	To be installed in tractors suitable for agricultural use	Free		Free
8407.34.05.30	Not exceeding 37.3 kW[No.]				Estimate →
	Exceeding 37.3 kW:
8407.34.05.60	Air-cooled[No.]				Estimate →
8407.34.05.90	Other[No.]				Estimate →
	To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704:
8407.34.14.00	Used or rebuilt[No.]	2.5%	Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	Estimate →
8407.34.18.00	Other[No.]	2.5%	Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	Estimate →
8407.34.25.00	Other[No.]	Free		35%	Estimate →
	Of a cylinder capacity exceeding 2,000 cc:
8407.34.35	To be installed in tractors suitable for agricultural use	Free		Free
8407.34.35.30	Not exceeding 37.3 kW[No.]				Estimate →
	Exceeding 37.3 kW:
8407.34.35.60	Air-cooled[No.]				Estimate →
8407.34.35.90	Other[No.]				Estimate →
	To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704:
8407.34.44.00	Used or rebuilt[No.]	2.5%	Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	Estimate →
8407.34.48.00	Other[No.]	2.5%	Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	Estimate →
8407.34.55.00	Other[No.]	Free		35%	Estimate →
8407.90	Other engines:
8407.90.10	To be installed in agricultural or horticultural machinery or equipment	Free		Free
	Not exceeding 37.3 kW:
8407.90.10.10	Less than 4,476 W[No.]				Estimate →
8407.90.10.20	Other[No.]				Estimate →
	Other:
8407.90.10.60	Air-cooled[No.]				Estimate →
8407.90.10.80	Other[No.]				Estimate →
8407.90.90	Other	Free		35%
8407.90.90.10	Gas (natural or liquid propane (LP)) engines[No.]				Estimate →
	Other:
8407.90.90.20	Less than 746 W[No.]				Estimate →
8407.90.90.40	746 W or greater but less than 4,476 W[No.]				Estimate →
8407.90.90.60	4,476 W or greater but not exceeding 18.65 kW[No.]				Estimate →
8407.90.90.80	Exceeding 18.65 kW[No.]				Estimate →

61 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.

Example: base duty and fees on $10000

For HTS 8407.33.60 at the general rate of 2.5%, shipped by ocean, before any Chapter 99 tariffs:

Base duty (2.5%)	$250.00
Merchandise Processing Fee (0.3464%, min $34.58)	$34.64
Harbor Maintenance Fee (0.125%)	$12.50
Duty and fees	$297.14

Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.

Special program codes in this heading

A, A*, A+: Generalized System of Preferences (GSP)
AU: U.S.–Australia FTA
B: Automotive Products Trade Act
BH: U.S.–Bahrain FTA
CL: U.S.–Chile FTA
CO: U.S.–Colombia Trade Promotion Agreement
D: African Growth and Opportunity Act (AGOA)
E, E*: Caribbean Basin Economic Recovery Act
IL: U.S.–Israel FTA
JO: U.S.–Jordan FTA
KR: U.S.–Korea FTA (KORUS)
MA: U.S.–Morocco FTA
OM: U.S.–Oman FTA
P, P+: CAFTA-DR
PA: U.S.–Panama Trade Promotion Agreement
PE: U.S.–Peru Trade Promotion Agreement
S, S+: USMCA (United States–Mexico–Canada Agreement)
SG: U.S.–Singapore FTA

A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.

Frequently asked questions

What is the duty rate for HTS 8407?

Heading 8407 has 21 rate lines. The general (MFN) duty rates are Free (16 lines), 2.5% (5 lines). Products of free trade agreement partners may enter at the special rate, and Column 2 rates apply to countries without normal trade relations. Chapter 99 tariffs can be added on top: calculate the full amount.

Do Section 301, 232 or 201 tariffs apply to HTS 8407?

It depends on the 8- or 10-digit subheading, the country of origin, the entry date and, for Section 232, the metal content. These additional duties are listed in Chapter 99 of the HTS. The free duty calculator checks each program for a given code, origin and date and shows which apply and why.

What fees are added to an import under HTS 8407?

Formal entries pay the Merchandise Processing Fee of 0.3464% of value (minimum $34.58, maximum $670.86 in FY2027). Ocean shipments also pay the Harbor Maintenance Fee of 0.125% of value. See the import duty calculator for how they combine.