HTS Heading 8503

Parts suitable for use solely or principally with the machines of heading 8501 or 8502

All 11 HTS codes under heading 8503 (parts suitable for use solely), with their duty rates from the 2026 HTS Revision 23. General duty Free to 6.5%.

Every line of heading 8503

  • 8503.00 Parts suitable for use solely or principally with the machines of heading 8501 or 8502.
  • 8503.00.20.00 Commutators (under: Parts suitable for use solely or principally with the machines of heading 8501 or 8502) (No.): General 2.4%; Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
  • 8503.00.35.00 For motors of under 18.65 W (under: Stators and rotors for the goods of heading 8501) (No.): General 6.5%; Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 90%.
  • 8503.00.45.00 For generators suitable for use on aircraft (No.): General Free; Special none; Column 2 35%.
  • 8503.00.65.00 Other (under: Stators and rotors for the goods of heading 8501) (No.): General 3%; Special Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
  • 8503.00.75.00 For motors of under 18.65 W (under: Other) (No.): General 6.5%; Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 90%.
  • 8503.00.90.00 For generators suitable for use on aircraft (No.): General Free; Special none; Column 2 35%.
  • 8503.00.95 Other (under: Other): General 3%; Special Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
  • 8503.00.95.20 Parts of motors (under: Other) (kg).
  • 8503.00.95.46 For AC generators (alternators) classified in statistical reporting number 8501.64.0110 (kg).
  • 8503.00.95.50 Other (under: Parts of generators) (kg).
  • 8503.00.95.70 Parts of wind-powered generating sets classified in subheading 8502.31.00 (kg).
  • 8503.00.95.80 Other (under: Other) (kg).

From MFG Calcs data: Electric motors and generators

U.S. imports of electric motors and generators (headings 8501, 8503) came to $17.25B in 2025, with $2.37B in calculated duty: an effective duty of 13.7%, every duty included.

Effective duty in Sep 2026: 12.7%, against 21.3% in Sep 2025.

Largest sources in 2025: Mexico $5.01B at 3.7% effective duty; Japan $2.19B at 16.1% effective duty; China $1.80B at 47.1% effective duty; Germany $1.64B at 11.4% effective duty; Vietnam $741M at 12.4% effective duty.

These are family totals from U.S. import statistics published through USITC DataWeb, not this heading's rate alone; effective duty is calculated duty as a share of customs value, an estimate, not a ruling.

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.

Last reviewed 2026-11-12.