Chapter 84 is the chapter in the HS classification system concerning nuclear reactors, boilers, machinery, mechanical appliances, and their parts, covering a wide range of goods from power machinery to office equipment. This chapter aims to distinguish equipment that performs work through mechanical motion from purely electrical/electronic equipment (the latter mostly classified in Chapter 85). Heading 8407 belongs to the internal combustion engine section of this chapter, specifically referring to spark-ignition reciprocating or rotary piston engines. Heading 8407 covers spark-ignition reciprocating or rotary piston internal combustion engines, including gasoline engines used in automobiles, ships, aviation, and other fields. Under this heading, goods are further subdivided by engine displacement, use, etc. Displacement is the core parameter, directly affecting power performance and classification. First 2 digits 84: indicates Chapter 84, belonging to the machinery category. Digits 3-4, 07: indicates heading 8407, i.e., spark-ignition reciprocating or rotary piston internal combustion engines. Digits 5-6, 35: indicates subheading 840735, specifically referring to reciprocating piston engines with displacement exceeding 3000cc. Note: Subheadings are tiered by displacement, with 3000cc being an important dividing point; if exceeded, the goods are classified under this subheading. The goods are reciprocating piston engines with displacement greater than 3000cc, meeting the description of heading 8407, and since the displacement exceeds 3000cc, they are classified under 840735. If the displacement does not exceed 3000cc, they are classified under 840734; if compression-ignition (diesel), under 8408; if rotary, under other subheadings of 8407.

Product Name: The specific name of the engine being declared, such as gasoline engine, reciprocating piston engine, etc. Brand: Fill in the brand of the engine, such as Toyota, BMW, etc. Model: The specific model of the engine, used to distinguish different specifications. Displacement: Engine displacement, in cc, must be clearly greater than 3000cc. Use: The use of the engine, such as for automobiles, ships, etc. Working Method: Spark-ignition or compression-ignition; here it should be spark-ignition. Power: Engine power, in kW. Year of Manufacture: The year the engine was manufactured, affecting regulation of imported used parts. Product Name: Gasoline Engine; Brand: BMW; Model: N55B30A; Displacement: 2979cc (Note: If actually greater than 3000cc, it must be declared truthfully); Use: For automobiles; Working Method: Spark-ignition; Power: 225kW; Year of Manufacture: 2020. False declaration of displacement, reporting above 3000cc as below, to evade higher tax rates. Misreporting the working method, reporting spark-ignition as compression-ignition, leading to classification errors. Vague declaration of use, failing to distinguish between automobiles, ships, aviation, and other different uses.

The core basis for classification is: 1. Engine type: must be a spark-ignition reciprocating piston engine; 2. Displacement: must be greater than 3000cc; 3. Use: typically for vehicles, ships, etc., but use does not affect subheading division; displacement is key. Note: If compression-ignition, classified under 8408; if rotary, under other subheadings of 8407. 840734 Reciprocating engines with displacement ≤3000cc: Displacement not exceeding 3000cc is classified under 840734; exceeding 3000cc under 840735. 8408 Compression-ignition engines: Compression-ignition (diesel) engines are classified under 8408, spark-ignition under 8407. 840790 Other engines: Rotary or other non-reciprocating engines are classified under 840790. 840721 Marine outboard engines: Marine outboard engines have a dedicated subheading; even if displacement >3000cc, they are classified under 840721. Confirm whether the engine is spark-ignition or compression-ignition? Confirm whether the displacement is greater than 3000cc? Confirm whether it is a reciprocating piston? Confirm whether it is for marine outboard use? Confirm whether it is for civilian or military use?

How to inquire about the tax rate for HS code 840735? You can check the latest tax rate by entering code 840735 on the General Administration of Customs website, China International Trade Single Window, or third-party inquiry platforms. Note that tax rates may change due to country, trade agreements, etc.; it is recommended to refer to the latest official announcements. Which code should an engine with a displacement of exactly 3000cc be classified under? According to HS rules, engines with displacement not exceeding 3000cc are classified under 840734, and those exceeding 3000cc under 840735. Therefore, 3000cc should be classified under 840734. What special requirements are there for importing used engines? Importing used engines must comply with national regulations on the import management of mechanical and electrical products, and may involve pre-shipment inspection, environmental standards, etc. It is recommended to consult customs and inspection and quarantine authorities in advance. How to distinguish between spark-ignition and compression-ignition engines? Spark-ignition engines use spark plugs to ignite gasoline, while compression-ignition engines use compression to ignite diesel. When declaring, the working method must be accurately filled in to avoid classification errors. Are marine engines also classified under 840735? Marine outboard engines have a dedicated subheading 840721; even if displacement >3000cc, they are not classified under 840735. Other marine engines, if spark-ignition reciprocating and with displacement >3000cc, may be classified under 840735. What is the main difference between 840735 and 8408? 8407 covers spark-ignition engines, and 8408 covers compression-ignition engines. The main difference lies in the ignition method: spark-ignition uses spark plugs, while compression-ignition relies on compression auto-ignition. What is the unit of displacement when declaring? Displacement is usually expressed in cubic centimeters (cc) or liters (L). When declaring, it should be filled in according to customs requirements, generally in cc. If an engine has a displacement exceeding 3000cc but is used for motorcycles, is the code different? Engines for motorcycles are usually classified under other subheadings of 8407, but if the displacement >3000cc and it is reciprocating, it may still be classified under 840735. The specific classification should be determined based on both use and displacement.