Once upon a time there was a CarQuest, but it has closed. Some auto parts are occasionally available at Ace Hardware, but their selection is quite limited. True Value also has a very basic selection of items.
Napa has most of your staples, and is usually able to get what you need within 24 hours if they don’t have it in stock.
Contact Napa Auto Parts
351 S St Vrain
Estes Park, CO 80517