O’Reilly Automotive Inc. is an American company that specializes in the retail sale of automotive aftermarket spare parts, supplies, equipment, tools and accessories. This public company is headquartered in Springfield, Missouri, and it has a staff holding of over 10,000 people. The company was founded by Charles F. O'Reilly and Charles H. O'Reilly in November 1957. It serves both professional clients and do-it-yourself customers. It has an extensive store network across the US. Its product segments include new and reconditioned automotive parts and maintenance items. Typical products include alternators, batteries, fuel pumps, brake system components, belts, engine additives, chassis parts and much more. O’Reilly Automotive Inc. offers various services and programs to its clientele, including battery diagnostic testing; battery, wiper and bulb replacement; custom hydraulic hoses; drum and rotor resurfacing and more.