Chapter 84 is the core chapter in the HS classification covering machinery and mechanical appliances, including power machinery, pumps, fans, air conditioners, furnaces and kilns, lifting machinery, office equipment, etc. This chapter emphasizes the mechanical function and power conversion attributes of goods, rather than materials or uses. Heading 8407 falls under the internal combustion engine category within this chapter and is a key branch of power machinery. Heading 8407 covers spark-ignition reciprocating or rotary internal combustion engines, including gasoline engines, gas engines, etc. This heading is further subdivided by displacement and use (marine, vehicle, aviation, etc.). Subheading 840734 specifically refers to reciprocating piston internal combustion engines with a displacement between 1000cc and 3000cc, mainly used for automobiles, generator sets, etc. The first 2 digits 84 represent Chapter 84, machinery and mechanical appliances; digits 3-4, 07, represent heading 8407, namely spark-ignition reciprocating or rotary internal combustion engines; digits 5-6, 34, represent subheading 840734, referring to reciprocating piston engines with a displacement exceeding 1000cc but not exceeding 3000cc. This subheading may be further subdivided by use, but the core criterion is the displacement range. The goods are reciprocating spark-ignition engines with a displacement of 1000-3000cc, which conforms to the description of heading 8407, and the displacement falls within the 1000-3000cc range, so they are classified under 840734. If the displacement is less than 1000cc, they should be classified under 840733; if greater than 3000cc, under 840735; if they are compression-ignition diesel engines, under 8408.
Chapter
Chapter 84 is the core chapter in the HS classification covering machinery and mechanical appliances, including power machinery, pumps, fans, air conditioners, furnaces and kilns, lifting machinery, office equipment, etc. This chapter emphasizes the mechanical function and power conversion attributes of goods, rather than materials or uses. Heading 8407 falls under the internal combustion engine category within this chapter and is a key branch of power machinery.
Heading
Heading 8407 covers spark-ignition reciprocating or rotary internal combustion engines, including gasoline engines, gas engines, etc. This heading is further subdivided by displacement and use (marine, vehicle, aviation, etc.). Subheading 840734 specifically refers to reciprocating piston internal combustion engines with a displacement between 1000cc and 3000cc, mainly used for automobiles, generator sets, etc.
Digit Breakdown
The first 2 digits 84 represent Chapter 84, machinery and mechanical appliances; digits 3-4, 07, represent heading 8407, namely spark-ignition reciprocating or rotary internal combustion engines; digits 5-6, 34, represent subheading 840734, referring to reciprocating piston engines with a displacement exceeding 1000cc but not exceeding 3000cc. This subheading may be further subdivided by use, but the core criterion is the displacement range.
Classification Basis
The goods are reciprocating spark-ignition engines with a displacement of 1000-3000cc, which conforms to the description of heading 8407, and the displacement falls within the 1000-3000cc range, so they are classified under 840734. If the displacement is less than 1000cc, they should be classified under 840733; if greater than 3000cc, under 840735; if they are compression-ignition diesel engines, under 8408.
📝 Declaration Elements
Product Name: The specific name of the engine declared, such as gasoline engine or reciprocating piston engine. Brand: The brand or manufacturer name of the engine, such as Toyota or Volkswagen. Model: The specific model or series number of the engine, used to identify specifications. Displacement: The total piston displacement of the engine, in cc or L, and must be between 1000-3000cc. Use: The final application scenario of the engine, such as automobile, generator set, or marine. Fuel Type: The fuel of a spark-ignition engine, such as gasoline, natural gas, or liquefied petroleum gas. Complete Engine or Not: Declared as a complete engine or parts; complete engines are classified under 840734, and parts under 8409. Power: The rated power of the engine, in kW or horsepower, to assist in confirming specifications. Product Name: Gasoline Engine; Brand: Toyota; Model: 2AR-FE; Displacement: 2494cc; Use: Automotive; Fuel Type: Gasoline; Complete Engine or Not: Complete Engine; Power: 133kW. Displacement unit is incorrectly filled in as liters, leading to incorrect range determination. Compression-ignition diesel engines are incorrectly classified under 840734. Failure to distinguish between complete engines and parts; parts should be classified under 8409.
Product Name
The specific name of the engine declared, such as gasoline engine or reciprocating piston engine.
⚠️ Writing only "engine" without indicating spark-ignition or compression-ignition.
Brand
The brand or manufacturer name of the engine, such as Toyota or Volkswagen.
⚠️ Confusing brand with model, or providing incomplete information.
Model
The specific model or series number of the engine, used to identify specifications.
⚠️ Incorrect or missing model, making it impossible to match the displacement.
Displacement
The total piston displacement of the engine, in cc or L, and must be between 1000-3000cc.
⚠️ Incorrect displacement unit, or misreporting it as another range.
Use
The final application scenario of the engine, such as automobile, generator set, or marine.
⚠️ Use description is too broad, such as "industrial use."
Fuel Type
The fuel of a spark-ignition engine, such as gasoline, natural gas, or liquefied petroleum gas.
⚠️ Misreporting a diesel engine as a gasoline engine, leading to classification errors.
Complete Engine or Not
Declared as a complete engine or parts; complete engines are classified under 840734, and parts under 8409.
⚠️ Declaring engine parts as complete engines.
Power
The rated power of the engine, in kW or horsepower, to assist in confirming specifications.
⚠️ Inconsistent power units or failure to provide power.
Displacement unit is incorrectly filled in as liters, leading to incorrect range determination.
Compression-ignition diesel engines are incorrectly classified under 840734.
Failure to distinguish between complete engines and parts; parts should be classified under 8409.
🎯 Classification Logic
The core basis for classification is: 1) the engine is a spark-ignition reciprocating piston internal combustion engine; 2) the displacement is between 1000cc and 3000cc; 3) it is used for non-aviation purposes such as vehicles and ships. A comprehensive determination must be made based on declaration elements such as product name, displacement, and fuel type. 840733 Reciprocating engines with displacement ≤1000cc: The displacement range is different; 840733 is not exceeding 1000cc, while 840734 is 1000-3000cc. 840735 Reciprocating engines with displacement >3000cc: Displacement exceeding 3000cc is classified under 840735, and displacement must be measured accurately. 8408 Compression-ignition internal combustion engines (diesel engines): 8408 is compression-ignition, while 8407 is spark-ignition; fuel type is the core difference. 8409 Engine parts: 8409 is for dedicated or mainly used parts, while complete engines are classified under 8407. 8501 Electric motors and generators: 8501 is electric, while 8407 is internal combustion engines; the power source is different. Is it a spark-ignition reciprocating piston engine? Is the displacement between 1000-3000cc? Is it used for non-aviation purposes such as vehicles and ships? Is it a complete engine rather than parts? Is the fuel type gasoline, gas, etc.?
Basis
The core basis for classification is: 1) the engine is a spark-ignition reciprocating piston internal combustion engine; 2) the displacement is between 1000cc and 3000cc; 3) it is used for non-aviation purposes such as vehicles and ships. A comprehensive determination must be made based on declaration elements such as product name, displacement, and fuel type.
Confused Codes：
840733 - Reciprocating engines with displacement ≤1000cc
The displacement range is different; 840733 is not exceeding 1000cc, while 840734 is 1000-3000cc.
840735 - Reciprocating engines with displacement >3000cc
Displacement exceeding 3000cc is classified under 840735, and displacement must be measured accurately.
8408 is compression-ignition, while 8407 is spark-ignition; fuel type is the core difference.
8409 - Engine parts
8409 is for dedicated or mainly used parts, while complete engines are classified under 8407.
8501 - Electric motors and generators
8501 is electric, while 8407 is internal combustion engines; the power source is different.
Self-Check：
✓ Is it a spark-ignition reciprocating piston engine?
✓ Is the displacement between 1000-3000cc?
✓ Is it used for non-aviation purposes such as vehicles and ships?
✓ Is it a complete engine rather than parts?
✓ Is the fuel type gasoline, gas, etc.?
❓ FAQ
How can I check the import tariff rate for 840734? You can check the General Administration of Customs website, China International Trade Single Window, or third-party query platforms, enter HS code 840734, select the destination and country of origin, and obtain the MFN rate, agreement rate, etc. Tariff rates may change, so it is recommended to rely on the latest official data. Which code applies to an engine with a displacement of exactly 1000cc? A displacement of 1000cc falls within the scope of 840734, because this subheading is for exceeding 1000cc but not exceeding 3000cc. If it is exactly 1000cc, it should be classified under 840733 (not exceeding 1000cc); attention must be paid to boundary values. What is the difference in HS codes between gasoline engines and diesel engines? Gasoline engines are spark-ignition and are classified under 8407; diesel engines are compression-ignition and are classified under 8408. The two are distinguished at the heading level, and the fuel type must be clearly stated during declaration. Which code should engine parts be classified under? If engine parts are dedicated or mainly used for spark-ignition engines, they should be classified under 8409, not 840734. 840734 applies only to complete engines. Can used engines be classified under 840734? Yes. HS codes do not distinguish between new and used, but the import of used engines must comply with national environmental protection, safety, and other regulations, and relevant certificates must be provided during declaration. Is an engine with a displacement of 3000cc classified under 840734 or 840735? A displacement of 3000cc falls under 840734, because this subheading is for not exceeding 3000cc. Only displacements exceeding 3000cc are classified under 840735. Are gasoline engines for power generation classified under 840734? Spark-ignition reciprocating engines for power generation, if their displacement is 1000-3000cc, are still classified under 840734. Use does not affect this subheading, but it should be noted that heading 8407 may be further subdivided by use. What unit should be used for displacement during declaration? It is recommended to fill in milliliters (cc) or liters (L), but it must be consistent with the HS code range. If liters are used, they must be converted to cc to determine whether the displacement is between 1000-3000cc.
Q: How can I check the import tariff rate for 840734?
A: You can check the General Administration of Customs website, China International Trade Single Window, or third-party query platforms, enter HS code 840734, select the destination and country of origin, and obtain the MFN rate, agreement rate, etc. Tariff rates may change, so it is recommended to rely on the latest official data.
Q: Which code applies to an engine with a displacement of exactly 1000cc?
A: A displacement of 1000cc falls within the scope of 840734, because this subheading is for exceeding 1000cc but not exceeding 3000cc. If it is exactly 1000cc, it should be classified under 840733 (not exceeding 1000cc); attention must be paid to boundary values.
Q: What is the difference in HS codes between gasoline engines and diesel engines?
A: Gasoline engines are spark-ignition and are classified under 8407; diesel engines are compression-ignition and are classified under 8408. The two are distinguished at the heading level, and the fuel type must be clearly stated during declaration.
Q: Which code should engine parts be classified under?
A: If engine parts are dedicated or mainly used for spark-ignition engines, they should be classified under 8409, not 840734. 840734 applies only to complete engines.
Q: Can used engines be classified under 840734?
A: Yes. HS codes do not distinguish between new and used, but the import of used engines must comply with national environmental protection, safety, and other regulations, and relevant certificates must be provided during declaration.
Q: Is an engine with a displacement of 3000cc classified under 840734 or 840735?
A: A displacement of 3000cc falls under 840734, because this subheading is for not exceeding 3000cc. Only displacements exceeding 3000cc are classified under 840735.
Q: Are gasoline engines for power generation classified under 840734?
A: Spark-ignition reciprocating engines for power generation, if their displacement is 1000-3000cc, are still classified under 840734. Use does not affect this subheading, but it should be noted that heading 8407 may be further subdivided by use.
Q: What unit should be used for displacement during declaration?
A: It is recommended to fill in milliliters (cc) or liters (L), but it must be consistent with the HS code range. If liters are used, they must be converted to cc to determine whether the displacement is between 1000-3000cc.
⚠️ Disclaimer: HS code classification, declaration elements, tariff rates and regulatory conditions on this page are for reference only and do not constitute legal advice on customs classification. Tariff rates and regulations are subject to change; the latest announcements from the General Administration of Customs and on-site determinations shall prevail. Please consult professional customs brokers or customs authorities before import/export.