8409.99.10
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
Duty rates
- General
- Free
- The base rate for goods from most countries.
- Special
- —
- Lower rates under trade agreements and programs, for goods that meet their rules of origin; each symbol names one.
- Column 2
- 10%
- The higher rate for the few countries without normal trade relations with the United States.
These are base rates, not what you pay. The country of origin can add extra duties (Sections 301, 232 and others), and customs fees come on top: the calculator adds up what applies to your goods, each with its source. Why the base rate is not enough
Calculate duties for this codeBase columns of the 2026 HTS Revision 22, in force from Oct. 30, 2026 (official source).
Official notices
Actions of the President, the USTR or U.S. Customs and Border Protection (CBP) that name this code.
- Oct 17, 2025 · The White House Adjusting Imports of Medium- and Heavy-Duty Vehicles, Medium- and Heavy-Duty Vehicle Parts, and Buses Into the United States
Mentioned in Chapter 99
The parts of Chapter 99, in the 2026 HTS Revision 22, that list HTS 8409.99.10, a broader code that includes it, or a narrower code within it.
| U.S. note | Excerpt | Headings that refer to it |
|---|---|---|
| U.S. note 20(f) | (f) Heading 9903.88.03 applies to all products of China that are classified in the following 8-digit subheadings, except products of China granted an exclusion by the U.S. Trade Representative and provided for in (1) heading 9903.88.13 and… | 9903.88.03, 9903.88.09 |
| U.S. note 33(g) | (g) Subject to a manufacturer's import adjustment offset amount that may be determined by the Secretary of Commerce under Proclamation 10925 of April 29, 2025 (90 FR 18899), the rates of duty set forth in heading 9903.94.05, 9903.94.42,… | 9903.94.05, 9903.94.62, 9903.94.63, 9903.94.66, 9903.94.67 |
| U.S. note 33(j) | (j) Heading 9903.94.32 sets forth the ordinary customs duty treatment for parts of passenger vehicles and light trucks that are products of the United Kingdom classifiable in the following statistical reporting numbers of the HTSUS… | 9903.94.32 |
| U.S. note 38(i) | (i) Subject to a manufacturer’s import adjustment offset amount that may be determined by the Secretary of Commerce under Proclamation 10984 of October 17, 2025 (90 FR 48451), the rates of duty set forth in heading 9903.74.08 applies to… | 9903.74.08 |
Being listed is not owing a duty. A note may list goods that a measure leaves out; whether a heading applies depends on the origin, the date and the product; and the measures on all the goods of a country list no code at all. The calculator says what applies.
In the tariff
- 8409Parts suitable for use solely or principally with the engines of heading 8407 or 8408
- Other
- 8409.99Other
- 8409.99.10Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machineryFree
- 8409.99.10.40For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704
- 8409.99.10.60For marine propulsion engines
- 8409.99.10.80Other