O'Reilly Automotive, Inc., together with its subsidiaries, is a specialty retailer and supplier of automotive aftermarket parts, tools, supplies, equipment and accessories. The Company�s stores carry a product line, including new and remanufactured automotive hard parts, maintenance items and various automotive accessories. As of December 31, 2013, the Company owned and operated 4,166 stores in 42 states, servicing both do-it-yourself (DIY) customers and professional service providers. The Company�s stores offer new and remanufactured automotive hard parts, such as alternators, starters, fuel pumps, water pumps, batteries, and belts; maintenance items, such as oil, antifreeze, fluids, filters, wiper blades, lighting, engine additives and appearance products, and accessories, such as floor mats, seat covers and truck accessories. In 2013, the Company derived approximately 58% of its sales from DIY customers and approximately 42% of its sales from professional service provider customers.