HTS 8421Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof

Product or HTS code

Rate lines24

Code	Description	General	Special	Column 2	Units
	Centrifuges, including centrifugal dryers
8421.11.00.00	8421.11.00.00Cream separatorsGeneral Free · Column 2 25% · No.	Free		25%	No.
8421.12.00.00	8421.12.00.00Clothes-dryersGeneral Free · Column 2 25% · No.	Free		25%	No.
8421.19.00.00	8421.19.00.00OtherGeneral 1.3% · Special Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · No.	1.3%	Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	No.
	Filtering or purifying machinery and apparatus for liquids
8421.21.00.00	8421.21.00.00For filtering or purifying waterGeneral Free · Column 2 35% · No.	Free		35%	No.
8421.22.00.00	8421.22.00.00For filtering or purifying beverages other than waterGeneral Free · Column 2 35% · No.	Free		35%	No.
8421.23.00.00	8421.23.00.00Oil or fuel filters for internal combustion enginesGeneral 2.5% · Special Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	2.5%	Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8421.29.00	8421.29.00OtherGeneral Free · Column 2 35%	Free		35%
8421.29.00.05	8421.29.00.05Refrigerant recovery and recycling unitsGeneral Free · Column 2 35% · No.	Free		35%	No.
	OtherGeneral Free · Column 2 35%	Free		35%
8421.29.00.15	8421.29.00.15Oil-separation equipmentGeneral Free · Column 2 35% · No.	Free		35%	No.
	OtherGeneral Free · Column 2 35%	Free		35%
8421.29.00.40	8421.29.00.40Hydraulic fluid power filters, rated at 1,000 kPa or greaterGeneral Free · Column 2 35% · No.	Free		35%	No.
8421.29.00.65	8421.29.00.65OtherGeneral Free · Column 2 35% · No.	Free		35%	No.
	Filtering or purifying machinery and apparatus for gases
8421.31.00.00	8421.31.00.00Intake air filters for internal combustion enginesGeneral 2.5% · Special Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	2.5%	Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8421.32.00.00	8421.32.00.00Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion enginesGeneral Free · Column 2 35% · No.	Free		35%	No.
8421.39.01	8421.39.01OtherGeneral Free · Column 2 35%	Free		35%
	Dust collection and air purification equipmentGeneral Free · Column 2 35%	Free		35%
8421.39.01.05	8421.39.01.05For machine tools of headings 8456 through 8465, inclusiveGeneral Free · Column 2 35% · kg	Free		35%	kg
8421.39.01.15	8421.39.01.15OtherGeneral Free · Column 2 35% · kg	Free		35%	kg
	OtherGeneral Free · Column 2 35%	Free		35%
	Industrial gas cleaning equipmentGeneral Free · Column 2 35%	Free		35%
8421.39.01.20	8421.39.01.20Electrostatic precipitatorsGeneral Free · Column 2 35% · No.	Free		35%	No.
8421.39.01.30	8421.39.01.30OtherGeneral Free · Column 2 35% · No.	Free		35%	No.
8421.39.01.40	8421.39.01.40Gas separation equipmentGeneral Free · Column 2 35% · No.	Free		35%	No.
	OtherGeneral Free · Column 2 35%	Free		35%
8421.39.01.60	8421.39.01.60Pneumatic fluid power filters, rated at 550 kPa or greaterGeneral Free · Column 2 35% · No.	Free		35%	No.
8421.39.01.90	8421.39.01.90OtherGeneral Free · Column 2 35% · kg	Free		35%	kg
	Parts
8421.91	8421.91Of centrifuges, including centrifugal dryers
8421.91.20.00	8421.91.20.00Drying chambers for the clothes-dryers of subheading 8421.12 and other parts of clothes-dryers incorporating drying chambersGeneral Free · Column 2 25% · No.	Free		25%	No.
8421.91.40.00	8421.91.40.00Furniture designed to receive the clothes-dryers of subheading 8421.12General Free · Column 2 25% · No.	Free		25%	No.
8421.91.60.00	8421.91.60.00OtherGeneral Free · Column 2 25% · kg	Free		25%	kg
8421.99.01	8421.99.01OtherGeneral Free · Column 2 35%	Free		35%
8421.99.01.40	8421.99.01.40Parts of machinery and apparatus for filtering or purifying waterGeneral Free · Column 2 35% · kg	Free		35%	kg
8421.99.01.80	8421.99.01.80OtherGeneral Free · Column 2 35% · kg	Free		35%	kg

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Mexico29.99% of imports	Canada11.03% of imports	Germany10.39% of imports	China8.97% of imports	South Korea4.37% of imports	Japan4.13% of imports	United Kingdom3.2% of imports	Italy2.17% of imports	Vietnam2.07% of imports	Taiwan2.05% of imports
8421.11.00.00Cream separators	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.03	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.12.00.00Clothes-dryers	10%9903.05.55	10%9903.05.29	10%9903.05.39	20%9903.05.319903.88.15	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.19.00.00Other	11.3%9903.05.55	11.3%9903.05.29	10%9903.05.39	38.8%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	11.3%9903.05.81	10%9903.05.39	13.8%9903.05.84	10%9903.05.76
8421.21.00.00For filtering or purifying water	10%9903.05.55	10%9903.05.29	10%9903.05.39	From 12.5%9903.05.31Depends on product facts	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.22.00.00For filtering or purifying beverages other than water	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.23.00.00Oil or fuel filters for internal combustion engines	From 2.5%Depends on product facts	From 2.5%Depends on product facts	From 15%9903.94.53Depends on product facts	From 27.5%9903.88.03Depends on product facts	From 15%9903.94.63Depends on product facts	VariesDepends on product facts	From 10%9903.94.32Depends on product facts	From 15%9903.94.53Depends on product facts	From 2.5%Depends on product facts	VariesDepends on product facts
8421.29.00.05Refrigerant recovery and recycling units	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	Varies9903.88.01Depends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts
8421.29.00.15Oil-separation equipment	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	Varies9903.88.01Depends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts
8421.29.00.40Hydraulic fluid power filters, rated at 1,000 kPa or greater	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	Varies9903.88.01Depends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts
8421.29.00.65Other	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	Varies9903.88.01Depends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts	VariesDepends on product facts
8421.31.00.00Intake air filters for internal combustion engines	12.5%9903.05.55	12.5%9903.05.29	10%9903.05.39	40%9903.05.319903.88.03	12.5%9903.05.71	12.5%9903.05.49	12.5%9903.05.81	10%9903.05.39	15%9903.05.84	10%9903.05.76
8421.32.00.00Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines	VariesDepends on product facts	VariesDepends on product facts	From 15%9903.94.53Depends on product facts	From 25%9903.88.01Depends on product facts	From 15%9903.94.63Depends on product facts	VariesDepends on product facts	From 10%9903.94.32Depends on product facts	From 15%9903.94.53Depends on product facts	VariesDepends on product facts	VariesDepends on product facts
8421.39.01.05For machine tools of headings 8456 through 8465, inclusive	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.39.01.15Other	10%9903.05.55	10%9903.05.29	10%9903.05.39	From 12.5%9903.05.31Depends on product facts	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.39.01.20Electrostatic precipitators	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.39.01.30Other	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.39.01.40Gas separation equipment	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.39.01.60Pneumatic fluid power filters, rated at 550 kPa or greater	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.39.01.90Other	10%9903.05.55	10%9903.05.29	10%9903.05.39	From 12.5%9903.05.31Depends on product facts	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.91.20.00Drying chambers for the clothes-dryers of subheading 8421.12 and other parts of clothes-dryers incorporating drying chambers	10%9903.05.55	10%9903.05.29	10%9903.05.39	20%9903.05.319903.88.15	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.91.40.00Furniture designed to receive the clothes-dryers of subheading 8421.12	10%9903.05.55	10%9903.05.29	10%9903.05.39	20%9903.05.319903.88.15	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.91.60.00Other	10%9903.05.55	10%9903.05.29	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.99.01.40Parts of machinery and apparatus for filtering or purifying water	10%9903.05.55	60%9903.05.299903.03.14	10%9903.05.39	From 12.5%9903.05.31Depends on product facts	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76
8421.99.01.80Other	10%9903.05.55	60%9903.05.299903.03.14	10%9903.05.39	37.5%9903.05.319903.88.01	12.5%9903.05.71	12.5%9903.05.49	10%9903.05.81	10%9903.05.39	12.5%9903.05.84	10%9903.05.76

Total duty on a $10,000 ocean shipment entered 2026-10-14, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).