qstringrequired
Parameter defines the search query. You can use anything that you would use in a regular NAPA Auto Parts search: a part name, a brand, or a part number, including the part numbers of other brands that NAPA products replace (e.g., `brake cleaner`, `Brakleen`, `CRC 05050`, or `PH3614`). Like on napaonline.com, some queries lead to a category of products (e.g., `oil filter` leads to Oil Filters). The category is returned in `search_information.category`. Others lead to another search (e.g., `generator` leads to `portable generator`), returned in `search_information.showing_results_for`.
