Automotive Parts Logistics for US Importers

Automotive parts logistics has two sides: OEM components that feed vehicle assembly, and aftermarket and replacement parts that restock distributors, repair shops and retail shelves.

From China, Taiwan, Japan, South Korea, India and Europe, parts move by ocean, FCL when one supplier fills a container and LCL for smaller orders. Mexico-origin parts cross the border by truck in 1 to 3 days, and air freight carries critical components from any origin.

NHTSA regulates motor vehicle equipment under the National Traffic and Motor Vehicle Safety Act. Parts that are subject to Federal Motor Vehicle Safety Standards (FMVSS) and require certification include tires (FMVSS 109, 119, 139), brake hoses and brake fluid (FMVSS 106, 116), glazing materials (FMVSS 205), lighting equipment (FMVSS 108), seat belts (FMVSS 209), and child restraint systems (FMVSS 213). Manufacturers and importers of these parts must certify compliance with the applicable FMVSS standard and maintain records supporting that certification. CBP can detain or refuse entry on safety-regulated parts that arrive without proper certification documentation. Aftermarket accessories that are not safety-regulated, such as floor mats, seat covers, and appearance parts, do not require NHTSA certification.

Active anti-dumping and countervailing duty orders on automotive parts from China include brake drums (AD and CVD orders), tapered roller bearings (AD order), and certain other categories. AD/CVD rates are set per manufacturer based on Commerce Department investigations and are updated annually through administrative reviews. On an antidumping order, a Chinese exporter without a separate rate of its own pays the China-wide rate, while countervailing duty orders apply an all-others rate to companies that were not individually reviewed. A part that is slightly out of scope today can fall in scope on a Commerce scope ruling issued while your goods are in transit.

USMCA replaced NAFTA in July 2020 and provides duty-free treatment for qualifying automotive parts originating in Mexico. For a part to qualify, it must meet the applicable rule of origin, which for automotive parts typically involves a regional value content threshold or a tariff shift requirement depending on the HTS classification. USMCA also introduced new rules specifically for automotive goods, including requirements for steel and aluminum purchasing from North American sources for vehicles, though these vehicle-level rules affect part importers indirectly through OEM sourcing decisions. The certificate of origin can be completed by the exporter, producer, or importer, and must be available to CBP on request.

US customs does not have a distinct regulatory category for OEM versus aftermarket parts. Both enter under the same HTS classification based on the part's function and composition, pay the same duty rates, and are subject to the same NHTSA and EPA requirements if the part type is safety or emissions regulated. The practical difference at customs is documentation: OEM parts typically travel with more detailed technical specifications and manufacturer certifications that support NHTSA compliance review, while aftermarket parts may require more effort to assemble equivalent documentation if CBP requests it. For AD/CVD purposes, both OEM and aftermarket parts in a scoped category are subject to the same cash deposit rates. The brand name or whether the part was designed for a specific vehicle make does not change the duty or AD/CVD treatment.

Most automotive parts from China carry Section 301 additional duties under Lists 1 through 4A, added on top of standard MFN duty. Parts under HTS Chapter 87 (vehicle bodies under heading 8707, parts and accessories under 8708) generally fall under List 3 at 25 percent. Engines and engine parts under Chapter 84 and electrical components under Chapter 85 carry rates that vary by specific HTS heading. On a Chinese brake part under HTS 8708.30.50, the combined duty stack is 52.5 percent of customs value before any AD/CVD duty: 2.5 percent MFN, 25 percent Section 232 and 25 percent Section 301. Section 301 exclusions for automotive parts have been limited and most have expired.

A standard automotive parts entry requires a commercial invoice, packing list, bill of lading, and CBP Form 7501 (Entry Summary). For safety-regulated components, CBP may request NHTSA certification records or test reports, and the importer files a DOT HS-7 declaration for every item of motor vehicle equipment. Parts inside the scope of an AD/CVD order pay a cash deposit at the applicable AD/CVD rate at entry, and Commerce decides whether a part is in scope through a scope ruling, on request or on its own initiative. For Mexico-origin parts claiming USMCA preference, a USMCA certification of origin must be available on request. EPA requires a Form 3520-1 declaration for vehicles and light-duty engines.

Yes, as Class 9 dangerous goods. The rules for air and ocean are in the guide to shipping lithium batteries.

Yes, and multi-origin programs are the standard for most US automotive importers today. A typical program might source commodity aftermarket parts from China, precision components from Taiwan, safety-critical parts from Japan or South Korea, and nearshore replenishment from Mexico. Each origin has its own transit time, duty treatment, USMCA eligibility, and Section 301 exposure. We manage all origins, with the operations team coordinating each lane on its own booking cycle and documentation requirements.

China to the US West Coast from Shanghai, Ningbo, or Tianjin into Los Angeles or Long Beach runs 14 to 18 transit days, plus 5 to 7 days for origin booking and documentation, 2 to 4 days for customs release and drayage, and 1 to 2 days for DC or facility receiving. Total planning window is 22 to 32 days under normal conditions. Taiwan from Kaohsiung or Keelung to the West Coast runs 12 to 15 transit days, with a similar total planning window of 20 to 28 days. Mexico cross-border truck runs 1 to 3 days from major manufacturing clusters to US Midwest or Southeast destinations depending on crossing point. Air freight from China or Taiwan runs 5 to 8 days for standard air and 3 to 5 days for expedited air on critical parts programs.