8409.99.91.90
Other
Parts suitable for use solely or principally with the engines of heading 8407 or 8408: Other: Other: Other: To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704
Duty rates
No active duty rates published for this code.
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.03.01
The duty provided in the applicable subheading + 10%
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.02
The duty provided in the applicable subheading
Articles the product of any country that (1) were loaded onto a vessel at the port of loading and in transit on the final mode of transit prior to entry into the United States, before 12:01 a.m. eastern standard time on February 24, 2026; and (2) are entered for consumption, or withdrawn from warehouse for consumption, before 12:01 a.m. eastern standard time on February 28, 2026
Effective from February 24, 2026 through July 24, 2026
9903.03.03
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.04
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(iii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.05
The duty provided in the applicable subheading
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components of any country, provided for in subdivision (aa)(iv) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.06
The duty provided in the applicable subheading
Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.07
The duty provided in the applicable subheading
Articles the product of Canada, as provided for in subdivision (aa)(vi) of U.S. note 2 to this subchapter
Applies to origin: CA
Effective from February 24, 2026 through July 24, 2026
9903.03.08
The duty provided in the applicable subheading
Articles the product of Mexico, as provided for in subdivision (aa)(vii) of U.S. note 2 to this subchapter
Applies to origin: MX
Effective from February 24, 2026 through July 24, 2026
9903.03.09
The duty provided in the applicable subheading
Articles of textiles or apparel the product of Costa Rica, the Dominican Republic, El Salvador, Guatemala, Honduras or Nicaragua, as provided for in subdivision (aa)(viii) of U.S. note 2 to this subchapter
Applies to origin: CR, SV, GT, HN, NI, DO
Effective from February 24, 2026 through July 24, 2026
9903.03.10
The duty provided in the applicable subheading
Articles that are donations, by persons subject to the jurisdiction of the United States, such as food, clothing and medicine, intended to be used to relieve human suffering
Effective from February 24, 2026 through July 24, 2026
9903.03.11
The duty provided in the applicable subheading
Articles that are informational materials, including but not limited to publications, films, posters, phonograph records, photographs, microfilms, microfiche, tapes, compact disks, CD ROMs, artworks and news wire feeds
Applies to origin: IL
Effective from February 24, 2026 through July 24, 2026
9903.88.03
LIST_1
The duty provided in the applicable subheading + 25%
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Applies to origin: CN
Effective from August 23, 2018
Related CBP rulings
The tariff classification of cast-iron heavy-duty cylinder heads from Mexico
are modified in any way, or if the goods do not conform to these facts at time of importation, you should bring this to the attention of U.S. Customs and Border Protection (CBP) and submit a request for a new ruling in accordance with 19 CF
The tariff classification of a cam phaser rotor from Brazil
The article under consideration has been identified as a cam phaser rotor, part number F-558189.19-0061.
The tariff classification of a connecting rod from South Korea
The item under consideration has been identified as a “connecting rod”. A connecting rod is the part of a piston engine which connects the piston to the crankshaft. Together with the crank, the connecting rod converts the reciprocating moti
The tariff classification of engine parts from South Korea
Pictures and other descriptive literature were submitted with your request. The products under consideration are five separate engine parts that include the piston, connecting rod, a pin, rings, and snap ring. The piston is made from steel
Revocation of NY N312073; Tariff Classification of Cast-Iron Cylinder Heads and Block Castings
The instant merchandise is designed to be used with heavy duty diesel engines for vehicles. The steps that the castings and cylinder heads will undergo before importation to the United States is described in NY N312073 as follows: (A) Manuf
Revocation of NY N264869; Tensioner Arm Assembly
In NY N264869 the subject merchandise is described as comprising of a plastic shoe and base which together attach to the timing chain and maintain its constant and regular orbit. One end of the item is fixed to an automobile engine with a b
Revocation of NY N264870; Timing chain tensioner
In NY N264870 the subject merchandise is described as used to control the tension in a timing chain and consisting of a steel housing, a spring, a rachet ring and a plunger. In controlling the tension of the timing chain, the tensioner perf
Application for Further Review of Protest No. 2304-18-100073; Classification of timing chain guide
The items under consideration are described as various models of timing chain guides, used in automobile engines. The timing chain guide controls the path of the chain between the crankshaft and the camshafts within an engine. It ensures pr
The tariff classification of an inlet flange and EGR elbow casting from China
Pictures and other descriptive literature were provided with your request. The items under consideration are an Exhaust Manifold Inlet Flange (part # FLG-0016-409-5011) and an Exhaust Gas Recirculating (“EGR”) Elbow Silicone Moly Ductile Ir
The tariff classification of an inlet flange and EGR elbow casting from China
Pictures and other descriptive literature were provided with your request. The items under consideration are an Exhaust Manifold Inlet Flange (part # FLG-0016-409-5011) and an Exhaust Gas Recirculating (“EGR”) Elbow Silicone Moly Ductile Ir
The tariff classification of forged connecting rods from Mexico
Pictures and other descriptive literature were provided with your request. The items under consideration are Forged Connecting Rods used in 14.8L diesel engines, suitable for Class 8 heavy trucks. The connecting rods are made of round steel
The tariff classification of exhaust manifold end pieces from the United Kingdom
The items under consideration have been identified as Exhaust Manifold End Pieces made of cast iron. In the supplemental information, which you provided per our request, you indicated that the parts are used on the hot side of a truck engin
Other codes in heading 8409
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 8409.99.91.90 from each major US trading partner.
Need to defend this classification?
TariffLens generates GRI reasoning, cites the right CBP rulings, and builds the audit trail you need for reasonable care.
Book a demo →