Brazil NCM · 8-digit subitem

NCM 8409.91.17 – Valve guides for spark-ignition engines

NCM 8409.91.17 (also written 84099117) is Brazil's code for valve guides for spark-ignition engines. Its first 6 digits are HS code 8409.91.

Official description of NCM 8409.91.17

PortuguêsOfficial
Guias de válvulas
EnglishUnofficial translation

Valve guides

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

How to read NCM 8409.91.17

84Chapter 09Heading 91Subheading

HS code 8409.91
Same in every country

1Item 7Subitem

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 84.09 Parts suitable for use solely or principally with the engines of heading no. 8407 or 8408 Partes reconhecíveis como exclusiva ou principalmente destinadas aos motores das posições 84.07 ou 84.08.
  3. Group 8409.9 Other: Outras:
  4. Subheading 8409.91 Engines; parts, suitable for use solely or principally with spark-ignition internal combustion piston engines (for other than aircraft) Reconhecíveis como exclusiva ou principalmente destinadas aos motores de pistão, de ignição por centelha (faísca)
  5. Item 8409.91.1 Connecting rods, cylinder blocks, cylinder heads, crankcases, carburettors, intake or exhaust valves, intake or exhaust manifolds, piston rings and valve guides Bielas, blocos de cilindros, cabeçotes, cárteres, carburadores, válvulas de admissão ou de escape, coletores de admissão ou de escape, anéis de segmento e guias de válvulas
  6. Subitem 8409.91.17 Valve guides Guias de válvulas

Other NCM codes under HS 8409.91

8409.91.11 Connecting rods for spark-ignition enginesBielas 8409.91.12 Spark-ignition engine blocks, heads, crankcasesBlocos de cilindros, cabeçotes e cárteres 8409.91.13 Diaphragm carburettors, max 22.8 mm venturi, 280 gCarburadores, com bomba e dispositivo de compensação de nível de combustível incorporados, ambos a membrana, de diâmetro de venturi inferior ou igual a 22,8 mm e peso inferior ou igual a 280 g 8409.91.14 Spark-ignition engine intake or exhaust valvesVálvulas de admissão ou de escape 8409.91.15 Spark-ignition engine intake/exhaust manifoldsColetores de admissão ou de escape 8409.91.16 Piston rings for spark-ignition enginesAnéis de segmento 8409.91.18 Other carburettorsOutros carburadores 8409.91.20 Pistons for spark-ignition enginesPistões ou êmbolos 8409.91.30 Cylinder liners for spark-ignition enginesCamisas de cilindro 8409.91.40 Electronic injection for spark-ignition enginesSistema de injeção eletrônica 8409.91.90 Other parts for spark-ignition enginesOutras

Questions about NCM 8409.91.17

What is NCM 8409.91.17?

NCM 8409.91.17 (84099117) is the Brazilian (Mercosur) code for valve guides for spark-ignition engines. Its official Portuguese description is “Guias de válvulas”.

What is the HS code for NCM 8409.91.17?

HS 8409.91 (Engines; parts, suitable for use solely or principally with spark-ignition internal combustion piston engines (for other than aircraft)). 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 8409.91.17?

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.