Hong Kong, China Special Administrative Region HS Code

HS Code 840731: Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity not exceeding 50 cm³ in Hong Kong, China Special Administrative Region

Q: Is HS code 840731 the same across all countries?

Yes — up to the 6-digit level, HS code 840731 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Hong Kong, China Special Administrative Region extends it under HKHS.

Q: What system does Hong Kong, China Special Administrative Region use to classify HS code 840731?

Hong Kong, China Special Administrative Region classifies products under the Hong Kong Harmonized System (HKHS; locally 香港協調制度), which extends HS codes to 8 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 840731 in Hong Kong, China Special Administrative Region?

The official source is https://www.customs.gov.hk/en/home/index.html. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 840731 in Hong Kong, China Special Administrative Region

Under Hong Kong, China Special Administrative Region's Hong Kong Harmonized System (香港協調制度), HS Code 840731 is the WCO Harmonized System subheading for Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity not exceeding 50 cm³. This is the most detailed internationally standardized level; Hong Kong, China Special Administrative Region extends classifications to 8 digits under its national tariff system. 840731 belongs to Section XVI: Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles, Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Heading 8407: Sparkignition reciprocating or rotary internal combustion piston engines.

Explore more 2026 Latest Hong Kong, China Special Administrative Region import export trade data and shipment records for HS Code Small Vehicle Engines Under 50cc on TradeInt global trade data platform

Classification Path of HS Code 840731 in Hong Kong, China Special Administrative Region

Section XVI

Chapters (84-85) Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles

Chapter 84

Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

HS Code 8407

Sparkignition reciprocating or rotary internal combustion piston engines

HS Code 840731

Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity not exceeding 50 cm³

HS Code 84073100

RECIPROCATING PISTON ENGINES FOR PROPULSION OF VEHICLES EXCEPT RAILWAY OR TRAMWAY STOCK, NOT OVER 50 CC CYLINDER CAPACITY 往復式活塞引擎，用於推動鐵路或電車路車輛以外的車輛，汽缸容量不超過50立方厘米

Hong Kong, China Special Administrative Region Tariff Classification: Hong Kong Harmonized System (HKHS)

In Hong Kong, China Special Administrative Region, HS 840731 is classified under the Hong Kong Harmonized System (香港協調制度) — a 8-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Hong Kong Harmonized System (HKHS)

Local name 香港協調制度

Digits 8

Official source https://www.customs.gov.hk/en/home/index.html

You know what 840731 means. Now see 2026 latest real trade activity for Small Vehicle Engines Under 50cc in Hong Kong, China Special Administrative Region.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

Search 2026 Latest Hong Kong, China Special Administrative Region Import Data Search 2026 Latest Hong Kong, China Special Administrative Region Export Data

Top Trading Product of HS Code 8407

Top Hong Kong, China Special Administrative Region import Product Under HS Code 8407

1 840710: Aircraft engines $13.3M 2 840790: Other engines $9.7M 3 840734: Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity exceeding 1000 cm³ $8.8M

Figures shown for 2025.

For more 2026 recent data, search for Hong Kong, China Special Administrative Region import trade records

Top Hong Kong, China Special Administrative Region export Product Under HS Code 8407

1 840710: Aircraft engines $10.6M 2 840734: Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity exceeding 1000 cm³ $10.5M 3 840721: Marine propulsion engines : Outboard motors $1.9M

Figures shown for 2025.

For more 2026 recent data, search for Hong Kong, China Special Administrative Region export trade records

Related HS Code to Hong Kong, China Special Administrative Region Small Vehicle Engines Under 50cc (840731)

HS Code 84073100

RECIPROCATING PISTON ENGINES FOR PROPULSION OF VEHICLES EXCEPT RAILWAY OR TRAMWAY STOCK, NOT OVER 50 CC CYLINDER CAPACITY

HS Code 840710

Aircraft engines

HS Code 840721

Marine propulsion engines : Outboard motors

HS Code 840729

Marine propulsion engines : Other

HS Code 840732

Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity exceeding 50 cm³ but not exceeding 250 cm³

HS Code 840733

Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity exceeding 250 cm³ but not exceeding 1000 cm³

HS Code 840734

Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity exceeding 1000 cm³

HS Code 840790

Other engines

HS Code 840110

Nuclear reactors (Euratom)

HS Code 840120

Machinery and apparatus for isotopic separation, and parts thereof (Euratom)

Frequently Asked Questions

What is HS code 840731 in Hong Kong, China Special Administrative Region?

HS code 840731 covers Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 : Of a cylinder capacity not exceeding 50 cm³ in Hong Kong, China Special Administrative Region. It sits in Chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), Heading 8407 of the Harmonized System, and is classified under HKHS.

Is HS code 840731 the same across all countries?

What system does Hong Kong, China Special Administrative Region use to classify HS code 840731?

Where can I officially look up HS code 840731 in Hong Kong, China Special Administrative Region?