Glossary entry (derived from question below)
English term or phrase:
accessory drive belt tensioner
Portuguese translation:
tensor da correia de transmissão acessória
English term
Portugal
EN/DE>PTpt Tech/Med/Bus/Law&Finance
Native in: Portuguese 
Works in: English to Portuguese, German to Portuguese
accessory drive belt tensioner
Proposed translations
Norway
Salvador Scofano and Gry Midttun
Engineer:Oil&Gas/Electron/Finan/Law/HSEQ
Native in: Norwegian 
, Portuguese
Works in: English to Portuguese, Norwegian to Portuguese, Portuguese to Norwegian, and 19 more.
tensionador (tensor) da correia de acionamento acessória
https://www.chevrolet.com.br/content/dam/chevrolet/.../05......
27 Airbag e tensionador do cinto de segurança ............... 93 ...... Correia de acionamento acessória: verifique a condição, substitua. o. 1). O que ocorrer primeiro.
Brazil
Professional Translator - 24 years
Native in: Portuguese (Variants: European/Portugal, Brazilian)
Works in: English to Portuguese, Spanish to Portuguese
tensionador da correio de acionamento auxiliar/acessória
Brazil
Your files, your language!
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, German to Portuguese, Portuguese to English, and 3 more.
tensor de correia do alternador
http://www.cars.com/articles/how-often-should-i-replace-my-accessory-drive-belt-1420680642715/
Brazil
32 years engineering/law/contracts
Native in: English (Variant: US) , Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
tensor auxiliar da correia do acionamento
https://www.google.com.br/search?q=tensor auxiliar da correi...
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