Brazil NCM · 8-digit subitem

NCM 8404.10.20 – Auxiliary plant for central heating boilers

NCM 8404.10.20 (also written 84041020) is Brazil's code for auxiliary plant for central heating boilers. Its first 6 digits are HS code 8404.10.

Official description of NCM 8404.10.20

PortuguêsOfficial
Da posição 84.03
EnglishUnofficial translation

Of heading 84.03

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 8404.10.20

84Chapter 04Heading 10Subheading

HS code 8404.10
Same in every country

2Item 0Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. Digits 7 and 8 are Brazil's own split of that HS code. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 84 Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof Reatores nucleares, caldeiras, máquinas, aparelhos e instrumentos mecânicos, e suas partes.
  2. Heading 84.04 Auxiliary plant for use with boilers of heading no. 8402 or 8403; e.g. economisers, super-heaters, soot removers, gas recoverers), condensers for steam or other vapour power units Aparelhos auxiliares para caldeiras das posições 84.02 ou 84.03 (por exemplo, economizadores, superaquecedores, aparelhos de limpeza de tubos ou de recuperação de gás); condensadores para máquinas a vapor.
  3. Subheading 8404.10 Boilers; auxiliary plant, for use with boilers of heading no. 8402 or 8403 (e.g. economisers, super-heaters, soot removers, gas recoverers) Aparelhos auxiliares para caldeiras das posições 84.02 ou 84.03
  4. Subitem 8404.10.20 Of heading 84.03 Da posição 84.03

Other NCM codes under HS 8404.10

8404.10.10 Auxiliary plant, steam/super-heated water boilersDa posição 84.02

Questions about NCM 8404.10.20

What is NCM 8404.10.20?

NCM 8404.10.20 (84041020) is the Brazilian (Mercosur) code for auxiliary plant for central heating boilers. Its official Portuguese description is “Da posição 84.03”.

What is the HS code for NCM 8404.10.20?

HS 8404.10 (Boilers; auxiliary plant, for use with boilers of heading no. 8402 or 8403 (e.g. economisers, super-heaters, soot removers, gas recoverers)). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 8404.10.20?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.