What is the term used for replacing something new or rebuilt in place of the existing?

The term "replace" specifically refers to taking out an existing item and putting in a new or rebuilt version in its place. This action typically implies that the new item is meant to restore functionality, address wear and tear, or upgrade the previous component. In plumbing and construction, this terminology is commonly used to indicate the straightforward action of swapping out an old fixture for a new one, maintaining the same location and function.

In contrast, terms like "restore" and "refurbish" often suggest some level of repair or improvement to the existing item rather than a complete swap. "Reinstall" refers to putting something back into its original position after it has been removed, rather than replacing it with a new unit. Therefore, "replace" is the most accurate term for the scenario described, where a new or rebuilt item is installed in place of an existing one.