The easiest way to make Oreilly Auto Parts contact for product queries and problems with shipping, returns, credit card processing, exchange, order cancellation, and more is to call customer service. The toll-free Oreilly Auto Parts phone number is 1-800-755-6759. Customers can call 1-800-283-3096 for Orewards help. People looking for general information about the company and the products must contact customer service at 1-888-327-7153. Customers who want to speak to someone at headquarters must call 1-417-829-5727.