NAPA Auto Parts - Walla Walla Motor Supply is known for its friendly and courteous staff who are willing to go the extra mile to help customers find quality parts at a fair price. Most DIY parts are in stock or available within 24 hours, making it a convenient choice for quick repairs. The store offers hassle-free account billing and good service, with staff ready to assist with questions, such as identifying parts. Customers appreciate the location for its inventory and helpful service, though they are advised to keep original boxes for core charges. Overall, it is a trusted place for auto parts, with staff dedicated to ensuring customers get the best parts and prices for their vehicles.