O'Reilly Automotive, Inc. owns and operates retail outlets in the United States. The company is headquartered in Springfield, Missouri and currently employs 71,612 full-time employees. The firm sells its products to both do-it-yourself (DIY) and professional service provider customers. Its product line includes new and remanufactured automotive hard parts and maintenance items, such as alternators, batteries, brake system components, belts, chassis parts, driveline parts, engine parts, fuel pumps, hoses, starters, temperature control, water pumps, antifreeze, appearance products, engine additives, filters, fluids, lighting, oil and wiper blades, and accessories, such as floor mats, seat covers and truck accessories. The firm's stores offer various services and programs to its customers, such as battery diagnostic testing; battery, wiper and bulb replacement; custom hydraulic hoses; drum and rotor resurfacing; electrical and module testing; loaner tool program, and used oil, oil filter and battery recycling.