HTS 8409.91.10.40: US import duty from China

Parts suitable for use solely or principally with the engines of heading 8407 or 8408, Other, Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines), Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery, For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704. Here is the full China to US duty stack and what it costs to land.

Duty rate & fees

ChargeRate
Base duty (MFN)0%
Section 301 (Lists 1-4)25%
Total duty (on customs value)25%
Merchandise Processing Fee (MPF)0.3464% (min $33.58, max $651.50)
Harbor Maintenance Fee (HMF), ocean0.125%

Worked example: $10,000 shipment

Customs value$10,000.00
Base duty (MFN)$0.00
Section 301 (Lists 1-4)$2,500.00
Merchandise Processing Fee$34.64
Harbor Maintenance Fee$12.50
Total landed cost$12,547.14

Excludes freight and insurance. Run your exact numbers in the calculator →

FAQ

What is the import duty on HTS 8409.91.10.40 from China?

Goods classified under HTS 8409.91.10.40 (Parts suitable for use solely or principally with the engines of heading 8407 or 8408, Other, Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines), Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery, For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704) have a duty of 25% of the customs value on the China to US lane (base rate plus any Section 301 tariff), plus the Merchandise Processing Fee (0.3464%, min $33.58, max $651.50) and, for ocean shipments, the Harbor Maintenance Fee (0.125%).

What does HTS code 8409.91.10.40 cover?

Parts suitable for use solely or principally with the engines of heading 8407 or 8408, Other, Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines), Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery, For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704. US Customs and Border Protection determines the final classification at entry.

How much does it cost to import HTS 8409.91.10.40 from China?

On a $10,000 shipment, the estimated total landed cost is $12,547, about 25.5% in duty and fees. Use the calculator for your exact value, quantity, and shipping mode.

Related codes in heading 8409

All of Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

Estimates for planning only. Final classification and duty are determined by U.S. Customs and Border Protection at entry. Rates from USITC HTSUS 2026-06-15-cn-us. The IEEPA reciprocal tariff was struck down (SCOTUS, 2026-02-20) and is excluded. Not legal or customs-broker advice.