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HSChapter 84
U.S. imports of parts for filtering or purifying machinery and apparatus (HS 842199) totaled $207.4M in June 2026, traded with 71 countries.
Importers of Parts for Filtering or Purifying Machinery and Apparatus paid $20.7M in duties in June 2026 — an effective duty rate of 14% on $150.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: June 2026 dataReplacement and OEM parts for liquid and gas filtering or purifying machinery — covering everything from filter housings and media frames to control components — are consolidated under 8421.99, with the US schedule splitting entries between general filtering apparatus parts (8421990140) and a broader NESOI line (8421990180). Mexico and China are the leading US import sources, and goods from China may carry Section 301 tariff exposure depending on the specific part. Accurate classification requires linking the part to its parent machine, since parts for centrifuges (8421.91) are excluded and classified separately.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Both filter elements and housings are generally classifiable as parts of filtering or purifying machinery under 8421.99, provided they are identifiable as parts of a specific filtering apparatus. However, if a filter element is a consumable that could also be classified as a separate article in its own right (e.g., a woven filter fabric), the classification analysis should consider whether it has a more specific heading. A CBP binding ruling is advisable for high-volume consumable filter media.
No. Parts of centrifuges, including centrifugal dryers, are specifically classified under 8421.91 and are excluded from 8421.99. Importers shipping mixed consignments of centrifuge parts and filter-machine parts must declare them on separate tariff lines.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $30.7M | $43.4M | +$12.7M |
| CANADA | $27.4M | $26.1M | -$1.3M |
| CHINA | $26.1M | $10.8M | -$15.3M |
| GERMANY | $27.0M | $9.6M | -$17.4M |
| KOREA, SOUTH | $9.8M | $4.8M | -$5.0M |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8421990180 | PARTS OF MACH & APPARAT,FILT,PURIFY,LIQ,GAS,NESOI | $143.7M | 9.78% | 75.69% | $14.1M |
| 8421990140 | PARTS OF FILTERING OR PURIFYING APPARATUS | $63.7M | 10.51% | 65.43% | $6.7M |
PARTS OF MACH & APPARAT,FILT,PURIFY,LIQ,GAS,NESOI
PARTS OF FILTERING OR PURIFYING APPARATUS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8421990180 | PARTS OF MACH & APPARAT,FILT,PURIFY,LIQ,GAS,NESOI | $118.8M |
| 8421990140 | PARTS OF FILTERING OR PURIFYING APPARATUS | $70.3M |
PARTS OF MACH & APPARAT,FILT,PURIFY,LIQ,GAS,NESOI
2.2M kg
PARTS OF FILTERING OR PURIFYING APPARATUS
2.2M kg
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $28.3M | $24.0M | -$4.2M |
| California | $30.3M | $12.6M | -$17.7M |
| Ohio | $9.8M | $17.4M | +$7.6M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $16.1M | $23.9M | +$7.8M |
| CHICAGO, IL | $10.7M | $15.2M | +$4.5M |
| LOS ANGELES, CA | $22.4M | -- | -$22.4M |