It's possible that:
* It's a local or regional brand: The term might be used by a small, local parts supplier or repair shop.
* It's a misspelling: The intended name might be something similar, like "Extreme Diesel Parts," which could refer to a specific brand.
* It's a generic term: The term might be used to describe aftermarket diesel parts generally, regardless of the specific brand.
To get more information, you'd need to provide more context, like:
* Where did you see "Xtreme Diesel Parts" mentioned? (Website, store, etc.)
* What specific truck make and model are you interested in?
* What type of parts are you looking for?
With more details, it might be possible to identify the intended brand or source of information.
