8483.10.10—Designed for use solely or principally with spark-ignition internal combustion piston engines or rotary engines
General duty rate
2.5%
Across 3 10-digit lines
Coverage on this page
Up one level: 8483.10 — Transmission shafts (including camshafts and crankshafts) and cranks: (subheading)
Plain-English explanation
HTS 8483.10.10 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Designed for use solely or principally with spark-ignition internal combustion piston engines or rotary engines. It sits in Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Section XVI: Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such Articles and rolls up 3 10-digit statistical lines, all with a general duty rate of 2.5%. 27 Chapter 99 tariff modifications currently touch one or more lines under this tariff item.
10-digit lines under 8483.10.10(3)
Pick a line to view full rate detail and compute landed duty
Tariff modifications(27)
Chapter 99 overlays touching one or more lines under 8483.10.10
| Code | Authority | Rate |
|---|---|---|
| 9903.81.91 | section_232 | The duty provided in the applicable subheading + a duty of 50% upon the value of the steel content. |
| 9903.81.92 | section_232 | The duty provided in the applicable subheading. |
| 9903.81.98 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.74.08 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.74.10 | section_232 | The duty provided in the applicable subheading |
| 9903.74.11 | section_232 | The duty provided in the applicable subheading |
| 9903.81.84 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.03 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.74.09 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.86 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.94.05 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.94.07 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.94.06 | section_232 | The duty provided in the applicable subheading |
| 9903.94.42 | section_232 | The duty provided in the applicable subheading |
| 9903.94.43 | section_232 | 15% |
| 9903.94.52 | section_232 | The duty provided in the applicable subheading |
| 9903.94.53 | section_232 | 15% |
| 9903.94.44 | section_232 | The duty provided in the applicable subheading |
| 9903.94.45 | section_232 | 15% |
| 9903.94.54 | section_232 | The duty provided in the applicable subheading |
| 9903.94.55 | section_232 | 15% |
| 9903.94.62 | section_232 | The duty provided in the applicable subheading |
| 9903.94.63 | section_232 | 15% |
| 9903.94.64 | section_232 | The duty provided in the applicable subheading |
| 9903.94.65 | section_232 | 15% |
| 9903.94.32 | section_232 | 10% |
| 9903.94.33 | section_232 | 10% |
Frequently asked questions
What does HTS 8483.10.10 cover?
HTS 8483.10.10 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Designed for use solely or principally with spark-ignition internal combustion piston engines or rotary engines. It belongs to Chapter 84 and rolls up 3 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 8483.10.10?
Every 10-digit line under HTS 8483.10.10 carries a general (Column 1) duty rate of 2.5%. Section 301, Section 232, and AD/CVD overlays may stack on top of this rate at the per-line level — open a specific 10-digit code to see its complete tariff stack.
How do I find the right 10-digit line under HTS 8483.10.10?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader tariff item HTS 8483.10.10 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 8483.10.10?
No active AD/CVD (antidumping or countervailing duty) orders currently flag any line under HTS 8483.10.10 in Tandom's catalog. Tandom monitors Federal Register notices daily; any new orders will appear here within 24h of publication.
Learn more
Tandom guides relevant to this code
Qualify a product for USMCA preferential treatment
A practical guide to qualifying a product for USMCA preferential tariff treatment. Rules of origin, the 9 certification data elements, and a worked example.
Open resource
How Chapter 99 tariff layers stack on a single entry
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
Open resource
How to calculate US import duties
A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
Open resource
Section 232 steel, aluminum, and copper duties in 2026
What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
Open resource
Wire the Tandom Duty Calculator API into a TMS or broker software
Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
Open resource
Section 301 China tariff exclusions in 2026
What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
Open resource