Importing Auto Parts into the USA: Duties, Compliance and Paperwork

There is no single U.S. duty rate for auto parts. A China-origin part pays in layers: the general rate of its tariff line (2.5% on the car and truck lines of heading 8708 in October 2026) plus each additional duty in chapter 99 of the tariff schedule that reaches that line and that origin. The additions were rewritten several times in 2025 and 2026, so a licensed customs broker has to read them from the current Harmonized Tariff Schedule (HTS), line by line. The rest is paperwork: importer of record, bond, security filing, origin marking, and rules for a few safety and emission parts.

Every rate and rule below was read on 7 October 2026 in the official source named beside it and is stated as of that date. See also the step-by-step import guide and the EU import guide.

Rear brake caliper 5K0615423 under QUATTROFRENI, the private label of ok.parts; brake parts sit in HTS subheading 8708.30 - see offers

1. Who Is Responsible: Importer of Record, Broker, Supplier

As of October 2026 the regulations define the importer as the person primarily liable for the duties (19 CFR 101.1). A licensed customs broker files on its behalf; the liability stays with the importer.

A delivered-duty-paid (DDP) quote still needs such a party. A corporation not incorporated in the United States may enter goods only with a resident agent and a bond from a resident corporate surety (19 CFR 141.18). Executive Order 14411 of 3 June 2026 directs the Department of Homeland Security to bar foreign importers of record from informal entry, restrict their continuous bonds and raise minimum bond coverage; ask your broker how far this has been implemented. Before accepting DDP, get the importer of record's name in writing. See the Incoterms guide.

2. Classification: Heading 8708 and Its Neighbors

"Auto part" is not a tariff category. Heading 8708 covers "parts and accessories" of motor vehicles, but Note 2 to Section XVII of the HTS removes many goods from it even when they are made for one car model: articles of vulcanized rubber (heading 4016), parts of general use, machines of headings 8401 to 8479, bearings (8482), electrical equipment such as ignition parts and lamps (chapter 85) and instruments (chapter 90).

The eight- or ten-digit line decides which additional tariffs apply: 8708.99 alone has separate lines for rubber vibration-control parts and for hub units with ball bearings. An invoice reading "auto spare parts" is useless; give the broker the OEM number, a photo, the material and the vehicle type for each line. Where the answer is open, CBP issues written rulings on prospective imports (19 CFR part 177). Every code in this article is a starting point for your broker, not a ruling.

Water pump 036121008M: heading 8413.30, not 8708 - see offers

Door lock 3D1837015: motor vehicle locks have their own line, 8301.20 - see offers

Pressure sensor A0081534828: an instrument of chapter 90 - see offers

3. How the Duty on a China-Origin Part Is Built Up

The additional tariffs are headings in chapter 99 of the HTS; its U.S. notes list the lines each heading reaches. The table shows HTS 2026 Revision 20, in effect from 28 September 2026. It lists layers, not a total.

What the notes say about stacking. Note 33(f) states that additional duties elsewhere in the same subchapter come in addition to the car-parts duty, and that parts under the car-parts headings are not subject to the metals duties; note 38(h) says the same for truck parts. Note 52(f) states that the 2026 Section 301 duties do not apply to parts provided for in the Section 232 parts headings. The 2018-2019 Section 301 headings sit in that subchapter and are not among the exceptions named. Beyond this, stacking for one invoice line is determined by the chapter 99 notes and confirmed by your broker.

Origin, not the port of loading, selects the rows. In a snapshot of ok.parts offers in October 2026, 90% came from suppliers in China and 10% from the UAE, the latter mostly ready stock, often under a vehicle maker's brand. Ask for the country of manufacture of each line.

The schedule moves. Executive Order 14389 of 20 February 2026 says the duties imposed under the International Emergency Economic Powers Act "shall no longer be in effect", yet their headings are still printed. A 10% Section 122 surcharge ran from 24 February 2026 and, by the HTS compiler's note, expired at the close of 23 July 2026. What counts is the schedule in force when the goods are entered, not when you pay the deposit.

4. Entry, Bond, ISF and the De Minimis Suspension

Entry types and deadlines

As of October 2026, goods must be entered within 15 calendar days after landing, and the entry summary with estimated duties follows within 10 working days of entry (19 CFR 142.2, 142.12). Informal entry is open to shipments up to $2,500, but the rule (19 CFR 143.21) excepts articles over $250 classified in chapter 99, subchapters III and IV - where the additional duties sit. Ask the broker which entry type a small air shipment needs.

De minimis is suspended

The exemption for shipments not over $800 was suspended for all countries in 2025. Executive Order 14388 of 20 February 2026 continued the suspension, and CBP rules of 24 June 2026 wrote it into 19 CFR 10.151 and 145.31. A box of sample bushings sent by courier is dutiable.

Customs bond

CBP releases goods against a single entry or continuous bond (19 CFR 142.4). Have the broker size it from the duty you expect to pay.

Importer Security Filing

For vessel cargo, 19 CFR part 149 requires eight data elements, among them the manufacturer, country of origin and six-digit HTS number of each line, 24 hours before loading at the foreign port; two more follow 24 hours before arrival. The bond conditions set liquidated damages of $5,000 per violation (19 CFR 113.62). In a mixed container, manufacturer, origin and code must be linked for every line: get that list from the supplier before stuffing.

5. Country-of-Origin Marking and Branded Boxes

As of October 2026, every article of foreign origin, or its container, must be marked legibly, indelibly and permanently with the English name of the country of origin (19 CFR 134.11). Articles not marked as required are subject to an additional duty of 10% of the appraised value (19 CFR 134.2).

In the ok.parts snapshot 87% of offers were unbranded goods in neutral packs, and a white box with a part-number sticker shows no origin: write the marking into the purchase order. If a private-label box shows a U.S. address or another country's name that could mislead, the origin must appear close to it, in comparable size, after "Made in" or "Product of" (19 CFR 134.46). See the private label guide.

A vehicle maker's logo is a separate risk: CBP may detain for up to 30 days articles bearing a suspected counterfeit of a trademark recorded with it (19 CFR 133.21). About one offer in nine in the snapshot carried a vehicle maker's brand; for those, read the counterfeit parts guide.

6. Safety Standards: Which Parts Are Regulated Equipment

NHTSA's importation FAQ states that DOT "does not approve any motor vehicles or motor vehicle equipment items" as complying; the manufacturer certifies compliance (49 U.S.C. 30115). Federal Motor Vehicle Safety Standards (FMVSS, 49 CFR part 571) reach equipment only where a standard is written for the item. As of October 2026 the FAQ names tires, rims, brake hoses, brake fluid, seat belt assemblies, glazing materials, and lamps, reflective devices and associated equipment.

For these items get from the factory, before paying a deposit: its certification, shown by a label or tag on the item or its container; its identification filing with NHTSA (49 CFR part 566; tires excepted); its designation of a U.S. agent for service of process (49 CFR part 551); and the data for the declaration the importer files at entry (49 CFR 591.5).

Calipers, control arms, mounts, pumps and most sensors are not on that list. But the Safety Act counts a person "importing motor vehicles or motor vehicle equipment for resale" as a manufacturer (49 U.S.C. 30102), and a manufacturer must notify NHTSA and its customers of a safety-related defect in replacement equipment (49 U.S.C. 30118). A recall for a cracked ball joint lands on you: see the quality control guide.

7. Emission-Related Parts and California

As of October 2026 the Clean Air Act (42 U.S.C. 7522) prohibits making, selling or installing any part whose principal effect is to bypass, defeat or render inoperative an emission control, and adds that nothing in that provision requires manufacturer parts for repair. The target is the delete kit, not the like-for-like replacement sensor or valve.

Catalytic converters have an approval route in California. The California Air Resources Board states that an aftermarket converter needs an exemption Executive Order to be sold and installed in the state, and that no used converter can be sold or installed there. EPA's statement of 30 September 2004 says it "will allow the sale and installation in federal areas" of converters California has approved for OBD-II vehicles. Ask a converter supplier for the Executive Order number per vehicle application, and check the rules of the state you sell into.

8. Antidumping and Countervailing Duty Orders

Antidumping (AD) and countervailing (CVD) duties come on top of the tariff layers, at rates set per exporter, and attach by the written scope of a Commerce Department order, not by HTS number. Federal Register notices read in October 2026 show these in force:

• Tapered roller bearings from China - AD order continued in March 2024; the notice cites scope rulings that placed wheel hub assemblies inside it.
• Certain brake drums from China and Turkey - AD and CVD orders of 12 August 2025 on gray cast iron drums of 14.75 to 16.6 inches inside diameter weighing more than 50 pounds.
• Passenger vehicle and light truck tires from China - AD and CVD orders continued in July 2026.

The list is not complete: for any bearing, hub unit, drum, wheel or tire, have the broker check the scope text.

9. Worked Examples: Three Parts

Each example assumes a part made in China and shows the questions in order, as of HTS 2026 Revision 20. None gives a total, and the lines named are starting points for your broker, not rulings.

Rear brake caliper 5K0615423. Subheading 8708.30, general rate 2.5%. Its line is in the Section 301 list of note 20 and in the car-parts list of note 33(g), which points to 9903.94.05 for a passenger-car part; notes 33(f) and 52(f) then name the metals and 2026 Section 301 duties as not applying. No AD/CVD order above describes a caliper, and it is not on NHTSA's equipment list.

Water pump 036121008M. Not 8708 but 8413.30, an engine cooling pump. Line 8413.30.90 is in both lists too: the caliper's questions, reached through another chapter.

Pressure sensor A0081534828. A pressure instrument points to 9026.20, where the eight-digit line decides between the 25% and the 7.5% Section 301 list. Heading 9026 is on neither the car-parts nor the truck-parts list; whether a certified-use heading or the 2026 Section 301 heading applies instead is for the broker.

Find suppliers by part number

10. Sequence with the Broker and Records to Keep

1. Before the purchase order: send the broker the line list with the country of manufacture of each line, and get back the HTS number, chapter 99 headings and an AD/CVD check per line.
2. Fix the importer of record and Incoterm, arrange the bond, collect certification documents for regulated equipment.
3. Write the purchase order with the origin marking and the per-line ISF data, then file the ISF before loading and the entry after arrival.

Factory offers from China in the ok.parts snapshot stated a median production lead time of about 38 days. With ocean transit on top, the tariff at entry can differ from the one you costed. UAE stock offers showed a median of 2 days, but for numbers offered from both places the median UAE price was 8.8 times the China median.

Entry records must be kept for 5 years from the date of entry (19 CFR 163.4): with the invoices, keep the classification reasoning per part number, the supplier's origin statement, certification copies and scope checks.

Where ok.parts fits. On ok.parts you search by OEM number, compare offers side by side - price, MOQ, lead time, supplier country and rank - open the contacts of the suppliers you choose, or post a buying request. Classification and entry stay with you and your broker, and the supplier country on an offer is not necessarily the country of manufacture.

11. Frequently Asked Questions

How much is the import duty on auto parts from China to the USA?

There is no single figure. In the HTS of October 2026 the layers include a general rate of 2.5% on the car and truck lines of heading 8708, a 25% Section 301 heading that lists those lines for Chinese goods, and a 25% Section 232 heading for listed car parts. Which layers apply together is set by the chapter 99 notes; a broker reads them per line at entry.

Can I import a small order or samples duty free if the value is under $800?

No. As of October 2026 the de minimis exemption is suspended for all countries. Samples sent by courier or post are dutiable.

Which auto parts need DOT approval?

None in the sense of a government approval. The manufacturer certifies the items covered by a standard, such as tires, brake hoses, brake fluid, glazing and lamps. An importer for resale also carries a manufacturer's recall duties.

Can my Chinese supplier ship DDP and handle U.S. customs for me?

Some do, through a party that acts as importer of record. Ask who it is and whose bond is used: an executive order of June 2026 directs tighter rules for foreign importers of record.

Are parts shipped from the UAE taxed differently from parts shipped from China?

The tariff follows the country the part is a product of, not the port it ships from: a part made in Japan and held in Dubai falls under the headings for Japan. Products of the UAE itself have had a 12.5% Section 301 heading since July 2026.

What is the HTS code for auto parts?

Heading 8708 covers parts and accessories of motor vehicles, for example 8708.30 for brakes. Engine parts, pumps, bearings, electrical parts, sensors and plain rubber parts are classified in other headings.

Related Guides

• How to Import Auto Parts from China: The Process Step by Step
• Importing Auto Parts into the EU: Duties, Type Approval and Paperwork
• Incoterms for Auto Parts Importers: EXW, FOB, CIF, DAP and DDP Explained
• Shipping Auto Parts from China: Sea, Rail, Air, Containers and HS Codes
• Counterfeit Auto Parts: How to Spot Fakes Before You Pay