Product classification
HS code for Seat adjuster mechanism: 9401.99
Seats, parts, (of other than wood) for use in the assembly of motor vehicles as determined by the minister.
Classification of seat adjuster mechanism under HS 9401.99
A seat adjuster mechanism is classified under HS code 9401.99, which covers parts of seats. While these components are frequently used in motor vehicles, the Harmonized System's hierarchy dictates their placement in Chapter 94 (Furniture) rather than Chapter 87 (Vehicles). This is due to Section XVII Note 1(n), which explicitly excludes articles of heading 9401 from the vehicle chapters, even if they are clearly designed for use in automobiles. Heading 9401 covers seats and their parts. Subheading 9401.99 is the specific code for parts of seats made of materials other than wood. These mechanisms include the tracks, rails, and gearing systems that allow a seat to move forward, backward, or recline. The classification is based on the function of the part as an integral component of the seat assembly. Whether the mechanism is manual or powered by an electric motor, the mechanical frame and adjusting hardware remain classified as seat parts. This ensures that all components dedicated to seat functionality are grouped together regardless of the final environment (office, home, or vehicle) in which the seat is installed.
- Covers
- Automotive seat slide rails
- Recliner mechanisms for car seats
- Height adjustment brackets for seating
- Seat track assemblies
- Lumbar support adjustment frames
- Also under 9401.99
- Recaro automotive seat frames
- Faurecia seat mechanisms
- Adient seat covers
- Lear Corporation foam components
Codes often confused with 9401.99
Common mistake. The most frequent misclassification is under HS code 8708.99, which covers parts and accessories of motor vehicles. Because the item is installed in a car, many importers assume it belongs in the vehicle chapter. However, as noted, the Section XVII exclusion for furniture parts directs these to 9401. Another error is 8302.41, which covers base metal mountings and fittings for furniture. While seat adjusters are metal fittings, the specific heading for seat parts (9401.99) takes precedence over the general heading for hardware (8302) according to GRI 3(a).
Top exporters and importers of HS 940199 (the code used for seat adjuster mechanism), 2025
In 2025, the largest exporter of HS 940199 (the code used for seat adjuster mechanism) in UN Comtrade data was Mexico, with 20% of world exports; the largest importer in UN Comtrade data was the United States, with 29% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 940199, not only seat adjuster mechanism.
Top exporters 2025 · share of world exports
- 1 Mexico $6.5B 20% of world exports
- 2 China $4.6B 14% of world exports
- 3 Czechia $2.8B 8.5% of world exports
World total: $32.5B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $10.0B 29% of world imports
- 2 Germany $4.3B 13% of world imports
- 3 Czechia $2.6B 7.5% of world imports
World total: $34.4B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for seat adjuster mechanism
Brazil classifies seat adjuster mechanism under NCM 9401.99.00: HS 9401.99 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product category is subject to the EU Deforestation Regulation (EUDR). Importers must provide due diligence statements proving the product was not produced on deforested land after December 31, 2020.
This product is covered by the EU Timber Regulation (EUTR), requiring operators to exercise due diligence to minimize the risk of placing illegally harvested timber on the EU market.
Questions about seat adjuster mechanism
What is the HS code for Seat adjuster mechanism?
The HS code for Seat adjuster mechanism is 940199 (Seats; parts, (of other than wood) for use in the assembly of motor vehicles as determined by the minister).
How do I classify Seat adjuster mechanism for customs?
Seat adjuster mechanism is classified under HS code 940199 — Seats; parts, (of other than wood) for use in the assembly of motor vehicles as determined by the minister. This is a 6-digit subheading level code.
What is the HS code for car seat adjustment tracks?
Car seat adjustment tracks and mechanisms are classified under HS code 9401.99 as parts of seats.
Why is a car seat part not in Chapter 87?
Section XVII Note 1(n) of the HS nomenclature excludes parts of seats from the vehicle chapters, requiring them to be classified in heading 9401.
Which countries are the top exporters of seat adjuster mechanism (HS 940199)?
In 2025, the top exporters of HS 940199 (the code used for seat adjuster mechanism) in UN Comtrade data were Mexico ($6.5B, 20% of world exports), China ($4.6B) and Czechia ($2.8B). World exports came to about $32.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of seat adjuster mechanism (HS 940199)?
In 2025, the top importers of HS 940199 (the code used for seat adjuster mechanism) in UN Comtrade data were the United States ($10.0B, 29% of world imports), Germany ($4.3B) and Czechia ($2.6B). World imports came to about $34.4B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Seat adjuster mechanism the same in all countries?
The base HS code 940199 for Seat adjuster mechanism is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for seat adjuster mechanism in Brazil?
In Brazil, seat adjuster mechanism (HS 940199) is classified under NCM 9401.99.00.