O'Reilly Automotive, Inc., together with its subsidiaries, operates as a retailer and supplier of automotive aftermarket parts, tools, supplies, equipment, and accessories in the United States, Puerto Rico, Mexico, and Canada. The company provides 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,...