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84059000
NUCLEAR REACTORS, BOILERS, MACHINERY AND MECHANICAL APPLIANCES; PARTS THEREOFProducer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers

Parts

Standard EU duty
1.7%
VAT
23%
Additional duties / sanctions
0 rules
Docs required
19 docs
X858Y811X834X837X840Y708+13
Standard rates
Applies toTypeRateConditionsRegulation
ERGA OMNESThird country duty1.7%R2261/98
Preferences
ERGA OMNES 0%ERGA OMNES 0%AD 0%AL 0%BA 0%CA 0%CAMER 0%CARI 0%CH 0%CI 0%CL 0%CM 0%CO 0%DOEd-D /L-SEH 0%DZ 0%EBA 0%EC 0%EEA 0%EG 0%ESA 0%EUCA 0%FJ 0%FO 0%GB 0%GE 0%GH 0%GSP 0%GSP+ 0%IL 0%JO 0%JP 0%KE 0%KR 0%LB 0%LOMB 0%MA 0%MD 0%ME 0%MK 0%MX 0%NZ 0%PE 0%PG 0%PS 0%SADC EPA 0%SB 0%SG 0%SM 0%SWITZ 0%SY 0%TN 0%TR 0%UA 0%VN 0%WS 0%XC 0%XK 0%XL 0%XS 0%ZA 0%
Notes
TM5101. Customs duties shall be suspended in respect of goods intended for incorporation in the ships, boats or other vessels classified at the following CN codes 8901 10 10; 8901 20 10; 8901 30 10; 8901 90 10; 8902 00 10; 8903 91 10; 8903 92 10; 8904 00 10; 8904 00 91; 8905 10 10; 8905 90 10; 8906 10 00; 8906 90 10 for the purposes of their construction, repair, maintenance or conversion, and in respect of goods intended for fitting to or equipping such ships, boats or other vessels.2. Customs duties shall be suspended in respect of:(a) goods intended for incorporation in drilling or production platforms:(1) fixed, of subheading ex 8430 49, operating in or outside the territorial sea of Member States, or(2) floating or submersible, of subheading 8905 20, for the purposes of their construction, repair, maintenance or conversion, and in respect of goods intended for equipping the said platforms.(b) tubes, pipes, cables and their connection pieces, linking these drilling or production platforms to the mainland.
EU003According to The Special Provisions of Section II (A) (3) of the Preliminary Provisions of the Combined Nomenclature the suspension of customs duties for goods for certain categories of ships, boats and other vessels and for drilling or production platforms shall be subject to conditions laid down in the relevant provisions of the European Union with a view to customs control of the use of such goods.
CD333The autonomous Common Customs Tariff duties laid down in Regulation (EEC) No 2658/87 for parts, components and other goods of a kind to be incorporated in or used for aircraft and parts thereof in the course of their manufacture, repair, maintenance, rebuilding, modification or conversion is suspended.In order to benefit from the suspension, the declarant shall present to the customs authorities an Authorised Release Certificate — EASA Form 1, as set out in Appendix I to Annex I to Regulation (EU) No 748/2012, or an equivalent certificate.The certificates which are deemed to be equivalent to Authorised Release Certificates are listed in Annex II to the Regulation (EU) 2018/1517.
TM904Preferences granted under the agreement between the European Union and Morocco in force from 19 July 2019.As of 3 October 2025, products originating in Western Sahara subject to controls by the customs authorities of the Kingdom of Morocco shall benefit from trade preferences under the terms of the new Agreement in the form of exchange of letters between the EU and Morocco, The European Union and the Kingdom of Morocco have agreed to allow those products to be identified by reference to the region of origin to be included in the proof of origin and as provided for in Protocol 4.In view of the application of these measures, the origin certificates codes U179 and U180 must be declared.The country code to be entered in the origin declaration when these proofs of origin are used is “2000”.
CD303The relief from or the reduction of customs duties shall be subject to a specific request expressed by the declarant in Data Element 12 04 000 000 of the UCC [Commission Delegated Regulation (EU) 2015/2446 (Annex B)] (former box 44 of the Single Administrative Document (SAD) "Additional information/Documents produced/Certificates and authorisations").
CD727Eligibility to benefit from this preference is subject to the presentation of an origin declaration stating the European Union origin of the goods, in the context of the Canada-European Union Comprehensive Economic and Trade Agreement (CETA).
CD906The list of non-eligible locations and their postal codes is available at the following address: http://ec.europa.eu/taxation_customs/customs/technical-arrangement_postal-codes.pdf
CD500Eligibility to benefit from this preference is subject to the presentation of a proof of origin stating the community origin of the goods, in the context of the agreement between the European Union and the Swiss Confederation.

Classification of gas generator parts (8405 90)

Subheading 8405 90 of the Combined Nomenclature covers parts for gas generators, water gas generators, acetylene generators, and similar generators of heading 8405. This subheading classifies components specifically designed for gas generators: grates, furnace elements, reaction chambers, ceramic inserts, gas purifier elements, air and steam nozzles, and reactor casing elements. Under Note 2(b) to Section XVI, parts intended solely or principally for machines of heading 8405 are classified under this heading. Standard general-purpose components (pipes, valves, bolts) are classified under the relevant CN headings. Automation and control elements are classified under Chapter 90 headings. The distinction between a specialist part and a general-purpose element requires analysis of the intended use.

Regulatory requirements for gas generator parts

Parts for gas generators under subheading 8405 90 may be subject to PED 2014/68/EU (pressure elements), ATEX Directive 2014/34/EU (elements operating in explosive atmosphere zones), or the Machinery Regulation (EU) 2023/1230 (mechanical elements). Materials for pressure elements must have certificates per EN 10204. Parts for acetylene generators are subject to specific safety requirements due to acetylene properties. Import requires an EORI number, customs declaration with code 8405 90, and technical documentation. REACH regulation may apply to sealing materials and refractory coatings.

Customs duties and trade in generator parts (8405 90)

MFN duty rates for parts under subheading 8405 90 should be verified in the European Commission's TARIC database. The spare parts market for gas generators is a niche market served by OEM manufacturers and specialist suppliers. Imports from China and India are present. Preferential rates may be available under FTA agreements. Chapter 84 products are not subject to CBAM. The customs value includes the cost of parts with technical documentation. Import VAT is charged. Current rates should be verified in TARIC.

Frequently asked questions

What parts are classified under subheading 8405 90?
Subheading 8405 90 covers parts specifically designed for gas generators: grates, furnace elements, reaction chambers, ceramic inserts, gas purifier elements, air and steam nozzles, and casing elements. The condition is that they are intended solely or principally for generators under heading 8405. Standard pipes, valves, and bolts are classified under the relevant CN headings. Automation elements under Chapter 90 headings.
Do parts for acetylene generators require ATEX certification?
Parts for acetylene generators may require ATEX 2014/34/EU certification if they operate in explosive atmosphere zones. Acetylene has an exceptional tendency for explosive decomposition even without air. Parts in contact with acetylene must comply with EN 13032 and EN 12583 standards. Materials in contact with acetylene must not contain copper above 65% (risk of copper acetylide formation). The manufacturer must confirm ATEX compliance.
Are ceramic elements for a gas generator classified under 8405 90?
Yes, if the ceramic inserts or refractory elements are specifically designed for reaction chambers of gas generators under heading 8405. General-purpose ceramic elements used in multiple types of furnaces and thermal equipment are classified under Chapter 69 headings (ceramic products). Assessment requires analysis of the element's specialisation and adaptation to a specific generator model.