Will I be penalised by Google for duplicate content if I use manufacturer product descriptions?

Nope! Google has confirmed that ecommerce stores are not penalised for using duplicate content, specifically manufacturer standard product descriptions.

The only time Google penalises a website is if the entire website is a duplicate of another website, across all pages and content - essentially a ‘scraped’ and cloned website.

You can rest easy knowing that you do not need to change the product descriptions provided by brands on the Partbot Marketplace.

Google on Using Duplicate Manufacturer Product Descriptions

Google's John Mueller in an SEO Office Hours hangout answered how Google handles product descriptions that are duplicates from the manufacturers. Mueller assured that it's not a problem and described what Google does to choose which page to show in the search results.

https://www.searchenginejournal.com/google-duplicate-product-descriptions/420899/#close