Gears are critical parts of transmissions, gearboxes and gearboxes, without which no vehicle can operate. However, when importing or exporting them, entrepreneurs often encounter problems incorrect classification according to the Commodity Nomenclature of Foreign Economic Activity, which leads to delays at customs, fines or even confiscation of the cargo. In 2026, the rules for the classification of gears became more stringent: now customs authorities require not only an accurate indication of the material and purpose of the part, but also confirmation of its compliance with the technical regulations of the EAEU.

It is especially difficult to understand the codes for those who work with gears for special vehicles (tractors, combines, mining dump trucks) or rare spare parts for old machine models. For example, the same bevel gear may fall under the code 8483.40 (if used in industrial equipment) or 8708.99 (if it is part of a car transmission). An error in choosing a code can result in additional duties up to 20% or forced reclassification with payment of a fine.

In this article we will look at:

  • 🔍 Basic HS codes for gears in 2026 and criteria for their selection
  • ⚖️ Common mistakes when declaring and how to avoid them
  • 📄 Documents, which customs will require to confirm the classification
  • 💰 Duty rates and benefits for different categories of gears
  • ⚙️ Features for composite gears and 3D printing

1. Basic HS codes for gears in 2026

Classification of gears by Commodity Nomenclature of Foreign Economic Activity of the EAEU depends on three key parameters: material, appointments and type of processing. In 2026, the following groups of codes are relevant:

HS Code Description Application examples Toll (2026)
8483.40.000.0 Gears and cogwheels from ferrous metals, not assembled Industrial gearboxes, machine tools 5–10%
8483.60.000.0 Gears from non-ferrous metals (aluminium, bronze, brass) Aviation mechanisms, marine gears 0–8%
8708.99.100.0 Gears for automobile transmissions (including gearboxes, transfer cases) Spare parts for cars and trucks 15–20%
8483.90.900.0 Gears from plastics or composites Household appliances, robotics 0–5%
8412.90.900.0 Gears for hydraulic pumps and turbines Agricultural machinery, construction equipment 10%

Important: if the gear is part of finished unit (for example, complete gearboxes), it is classified according to the code of this assembly, and not as a separate part. So, the gear as part of the gearbox for Volvo FH16 will be declared as part of a truck (code 8704.22), and not by 8708.99.

⚠️ Attention: On January 1, 2026, the new technical regulations of the EAEU came into force EAEU TR 056/2023, which tightened the requirements for marking gears made of composite materials. Now the parts should be applied QR code with composition data, otherwise customs may assign a code 8483.90.900.0 with maximum duty.

2. How to determine the correct HS code for a gear?

The code selection algorithm consists of 5 steps. Missing even one of them may lead to misclassification:

  1. Define material:
    • 🔹 Steel/cast iron → group codes 8483.40
    • 🔹 Aluminium/brass → 8483.60
    • 🔹 Plastic/composite → 8483.90.900.0 or 3926.90.970.0 (if made from thermoplastics)
  2. Specify the purpose:
    • 🚗 For automotive technology → codes 8708.99 or 8708.40 (for gearboxes)
    • ⚙️ For industrial equipment → 8483.40 or 8483.60
  • Check processing:
    • 🛠️ Heat treated (hardening, carburization) → may fall under 8483.40.100.0
    • 🖌️ Raw (cast, stamped) → 8483.40.900.0

    Example: Final drive gear for KAMAZ-6520 made of carburized alloy steel will be classified as 8708.99.100.0, and a similar part for industrial conveyor - how 8483.40.100.0.

    📊 What type of gears do you import most often?
    Automotive (gearboxes, gearboxes)
    Industrial (machines, pumps)
    Agricultural machinery
    Other

    3. Typical mistakes when declaring gears

    According to the Federal Customs Service of Russia, 37% errors when classifying gears are associated with an incorrect determination of their purpose. Here are the most common mistakes:

    • 🚫 Confusion between 8483.40 and 8708.99:

      Many importers mistakenly classify gears as special equipment (for example, excavators Hitachi ZX350) to vehicle codes. In fact, such parts are classified as industrial (8483.40), if they are not included in the finished machine.

    • 🚫 Ignore processing:

      Gears after nitriding or induction hardening must be declared taking these processes into account. For example, code 8483.40.100.0 involves heat treatment, and 8483.40.900.0 - its absence.

    • 🚫 Failure to take into account equipment:

      If a gear comes complete with a shaft or bearings, it may be reclassified as 8483.90.300.0 (“other transmission mechanisms”), which will increase the duty by 3–5%.

    ⚠️ Attention: Customs is especially picky about gears for hybrid and electric cars (for example, Tesla Model 3 or BYD Song). There is often an attempt to classify them as "electronic components" (8501.10), but the correct code is 8708.99.100.0 with a duty of 15%.

    ☑️ Documents to confirm the HS code

    Done: 0 / 5

    4. Documents required by customs

    For trouble-free registration of gears, it is necessary to prepare a package of documents confirming the classification. Without them, customs has the right suspend production of goods for up to 10 days for additional examination.

    Main documents:

    • 📋 Technical description (in Russian!) indicating:
      • Material (grade of steel, alloy or plastic)
      • Gear type (straight, helical, chevron)
      • Purpose (for example, "transmission secondary shaft gear Mercedes Actros")
    • 📜 Certificates:
      • For auto gears - vehicle type approval (OTTS) or certificate TR TS 018/2011
      • For industrial - declaration of conformity EAEU TR 010/2011 (car safety)
    • 🖼️ Photos or drawings indicating the dimensions and engagement module.

    If the gear is custom-made (for example, for restoration GAZ-53), customs may require a conclusion independent examination about its compliance with the declared code. The cost of such an examination is from 15,000 ₽, the period is up to 5 working days.

    What to do if customs does not agree with your HS code?

    If the customs inspector insists on reclassification, you have 3 options:

    1. Provide additional documents (for example, a letter from the manufacturer confirming the purpose of the part).

    2. Challenge the decision through the superior head of the customs post (processing period - 3 days).

    3. Conduct a preliminary classification decision (PRT) before delivery of the goods. This takes 30–60 days, but guarantees protection from fines.

    5. Duties and benefits for gears in 2026

    The size of the import duty on gears depends not only on the HS code, but also on the country of origin. The following rates apply in 2026:

    HS Code Country of origin Duty (%) Benefits/exceptions
    8483.40.000.0 China, India, Türkiye 10% For gears weighing < 5 kg - 5%
    8708.99.100.0 Germany, Japan, South Korea 15% For spare parts for electric vehicles - 0% (Decree No. 789 of 2023)
    8483.60.000.0 USA, Canada 8% For aerospace technology - 0%
    3926.90.970.0 Any 0% Only for gears from polyamide or polyacetal

    Important: from July 1, 2026 for gears from EAEU partner country (Belarus, Kazakhstan, Armenia, Kyrgyzstan) duty canceled if available certificate of origin form ST-1. However, if the part was made from imported materials (for example, Chinese steel), the benefit does not apply.

    💡

    If you import gears from Turkey, ask the supplier certificate EUR.1. Under the free trade agreement with the EAEU (2023), this will reduce the duty to 0% for codes 8483.40 and 8483.60.

    6. Features of classification of gears made of composites and 3D printing

    Gears made from composite materials (carbon fiber, Kevlar, fiberglass) or method 3D printing, are allocated to separate subheadings. Special rules apply for them:

    • 🔄 3D printing:

      If the gear is printed on 3D printer made of metal powder, it is classified by material (for example, 8483.40 for steel). However, if used polymer powder, the code will be 3926.90.970.0 with zero duty.

    • 🧬 Composites:

      Gears from carbon fiber for racing cars (eg Formula 1) fall under the code 8708.99.100.0, but require permission from Rosstandart as "special sports parts".

    ⚠️ Attention: Gears printed on a 3D printer using technology DMLS (direct laser sintering of metal), must undergo x-ray control at customs. Without a conclusion about the absence of internal defects, they can be classified as “defective” (8483.90.900.0) with a duty of 20%.

    7. Practical advice on working with customs

    To avoid delays and fines, follow these guidelines:

    1. Order an advance decision (PRT):

      If you are in doubt about the code, submit a request for PRT to the Federal Customs Service 2 months before delivery. The cost is 30,000 rubles, but this is cheaper than the fine for incorrect classification (up to 300,000 rubles).

    2. Specify the engagement module:

      Be sure to include in the declaration module (m) and number of teeth (z). For example: "gear m=2, z=40". This will help the inspector quickly confirm the code.

    3. Check country of origin:

      If the gear is made in China but packaged in Germany, customs may assign a code 8708.99.100.0 with a duty of 15% instead of 10%. Request from the supplier certificate of origin with the seal of the actual manufacturer.

    💡

    The most common mistake is an attempt to “hide” automobile gears under the codes of industrial equipment (8483.40). Customs can easily identify this by markings (for example, numbers OEM from ZF or Getrag) and fines 50% of the value of the cargo.

    FAQ: Frequently asked questions about HS codes for gears

    🔹 How to classify a gear if it comes with a bearing?

    If the gear and bearing permanently connected (for example, gear shaft assembly), the code is used 8483.90.300.0 (“other transmission mechanisms”). If parts are supplied separately, they are declared according to their codes: gear - 8483.40, bearing - 8482.10.

    🔹 Do gears for tractors need to be certified?

    Yes, for gears used in agricultural machinery (for example, John Deere 6R), required declaration TR CU 010/2011 (about car safety). An exception is spare parts for equipment manufactured before 2015.

    🔹 Is it possible to import used gears?

    Used gears are classified according to the same codes, but with the addition of a suffix .90 (for example, 8483.40.900.0). However, it works for them import ban without permission from Rosselkhoznadzor (if the part is from agricultural machinery) or the Ministry of Internal Affairs (if from a car). The duty increases by 50%.

    🔹 How to declare gears for electric vehicles?

    Gears for electric cars (for example, Tesla Model Y or Nissan Leaf) fall under the code 8708.99.100.0, but from 2026 it is valid for them benefit 0% if you have a certificate EAC Hybrid. Without a certificate, the fee will be 15%.

    🔹 What to do if customs requires an examination?

    If the inspector insists on an examination, you can:

    1. Agree and pay for it (cost: 10,000–50,000 rubles).
    2. Provide alternative documents (for example, a conclusion from an independent laboratory on the composition of the material).
    3. Dispute the claim via Customs clearance department (term - 3 days).

    The examination period is up to 10 days. If you are not satisfied with the result, you can appeal in arbitration court.