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84049000
NUCLEAR REACTORS, BOILERS, MACHINERY AND MECHANICAL APPLIANCES; PARTS THEREOF›Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economisers, superheaters, soot removers, gas recoverers); condensers for steam or other vapour power units

Parts

Standard EU duty
2.7%
VAT
23%
Additional duties / sanctions
0 rules
Docs required
13 docs
X858Y811X834X837X840Y708+7
Standard rates
Applies toTypeRateConditionsRegulation
ERGA OMNESThird country duty2.7%-R2261/98
ERGA OMNESLow-value consignment customs duty3 EUR-R0382/26
ERGA OMNESSuspension - goods for certain categories of ships, boats and other vessels and for drilling or production platforms0%2 condition(s)R2658/87
Preferences
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%Mercosur 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%US 0%VN 0%WS 0%XC 0%XK 0%XL 0%XS 0%ZA 0%
Notes
TM01066
An ‘item’ is determined by the product's tariff classification, not by the number of physical pieces. Commission examples: 5 identical T-shirts = €3 (1 item); a T-shirt and a watch = €6 (2 items). The measure covers distance sales in consignments valued up to €150. The Commission states an exception for goods covered by preferential agreements or customs union measures when VAT was not collected through IOSS and the goods are declared in H1. European Commission guidance (08 Jun 2026, updated 20 Jul 2026)
Tariff data footnote textFrom 1 July 2026 until 1 July 2028, a customs duty of EUR 3 per item in a consignment the intrinsic value of which does not exceed a total of EUR 150 shall apply instead of the relief eliminated pursuant to Article 1 of this Regulation, where:(a) the importation of the goods is exempt from VAT in accordance with Article 143(1), point (ca), of Directive 2006/112/EC; or(b) the goods are in a postal consignment as defined in Article 1, point (24), of Delegated Regulation (EU) 2015/2446.
TM510
1. 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 22 10, 8903 23 10, 8903 32 10, 8903 33 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.
EU003
According 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.
TM904
Preferences 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”.
CD303
The 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").
CD727
Eligibility 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).
CD906
The 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
CD500
Eligibility 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.
CD01100
For the purposes of this Regulation, the origin of goods shall be determined in accordance with the rules on non-preferential origin as referred to in Title II, Chapter 2, Section 1 of Regulation (EU) No 952/2013, until rules on preferential origin as referred to in Article 64(2) or (3) of that Regulation have been adopted.
1

Binding Tariff Information

example

ROgold5/004868

Steel heating manifold for boilers

carbon steelGRI 1GRI 6

BTI (Binding Tariff Information) is an official EU customs decision confirming the classification of goods. Valid for 3 years, binding across all EU member states.

Classification of auxiliary equipment parts (8404 90)

Subheading 8404 90 of the Combined Nomenclature covers parts for boiler auxiliary equipment of subheading 8404 10 and steam condensers of subheading 8404 20. This subheading classifies replacement components specifically designed for economisers, superheaters, slag removers, condensers, and other auxiliary equipment, including heat exchanger tubes, tube sheets, headers, slag remover elements, and condenser elements. Classification is based on Note 2(b) to Section XVI: parts intended solely or principally for equipment of heading 8404 are classified under this heading. Standard general-purpose components (bolts, gaskets, commercial tubing) are classified under the headings appropriate to those products.

Regulatory requirements for auxiliary equipment parts

Parts for auxiliary equipment under subheading 8404 90 may be subject to PED 2014/68/EU if they are pressure elements (heat exchanger tubes, headers, tube sheets). Materials must have certificates per EN 10204 type 3.1 or 3.2. Parts for slag removers and mechanical systems may be subject to the Machinery Regulation (EU) 2023/1230. Import requires an EORI number, customs declaration with code 8404 90, and technical documentation. Replacement parts must meet the safety requirements of the original equipment. REACH regulation may apply to sealing materials. The importer should possess a technical specification identifying the equipment for which the part is intended.

Customs duties and trade in parts (8404 90)

MFN duty rates for parts under subheading 8404 90 should be verified in the European Commission's TARIC database. The spare parts market for auxiliary equipment is essential for maintaining the performance of power and heating installations. OEM manufacturers and aftermarket suppliers provide heat exchanger tubes, slag remover elements, and condenser parts. Imports from China, India, and Korea are present in the European market. 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 material certificates. Import VAT is charged at the national rate. Current rates should be verified in TARIC.

Parts for auxiliary equipment - PED requirements and customs classification

CN code 8404 90 covers parts for auxiliary equipment. As components of steam and thermal installations, these items are subject to TARIC duty rates and must comply with the Pressure Equipment Directive PED 2014/68/EU. CN classification requires determining whether the goods are complete apparatus or parts, which affects the duty rate and required documentation.

Frequently asked questions

What parts are classified under subheading 8404 90?
Subheading 8404 90 covers parts specifically designed for boiler auxiliary equipment (economisers, superheaters, slag removers) and steam condensers: heat exchanger tubes, tube sheets, headers, slag remover elements, condenser elements. The condition is that they are intended solely or principally for equipment under heading 8404. Standard commercial tubing and bolts are classified under the relevant CN headings.
Are heat exchanger tubes for condensers subject to PED?
Yes. Heat exchanger tubes for steam condensers, operating under pressure or vacuum, are subject to PED 2014/68/EU as pressure elements. Tube materials (copper, brass, titanium, stainless steel) must have material certificates per EN 10204 type 3.1 or 3.2. Tubes must meet the requirements of EN 13445 or relevant industry standards (TEMA, HEI). Material traceability is required throughout the supply chain.
How to distinguish a part under 8404 90 from a general-purpose component?
A part classified under 8404 90 must be specifically designed or adapted for boiler auxiliary equipment or a steam condenser. If the element is manufactured solely as a spare part for an economiser, superheater, or condenser and is not used in other equipment, it is classified under 8404 90. Standard tubes, bolts, gaskets, or bearings used widely in multiple machines are classified under the relevant CN headings (7304-7306, 7318, 8482).
How to classify parts for auxiliary equipment under CN 8404 90?
Classification of parts for auxiliary equipment under CN 8404 90 depends on whether they constitute standalone apparatus or parts.