Advance Auto Parts is an automotive aftermarket parts provider in North America, serving both professional installers (Professional), and do-it-yourself (DIY), customers as well as independently owned operators. The company's stores and branches provide a range selection of brand name, original equipment manufacturer and private label automotive replacement parts, accessories, batteries and maintenance items for domestic and imported cars, vans, sport utility vehicles and light and heavy duty trucks. Through its integrated operating approach, the company serves its Professional and DIY customers through a variety of channels ranging from brick and mortar store locations to self-service e-commerce sites.

AutoZone is a retailer and a distributor of automotive replacement parts and accessories. The company operates stores in the United States, including Puerto Rico and Saint Thomas, Mexico, and Brazil. Each store carries a product line for cars, sport utility vehicles, vans and light trucks, including new and remanufactured automotive hard parts, maintenance items, accessories and non-automotive products. In addition, the company has a commercial sales program that provides commercial credit and delivery of parts and other products to local, regional and national repair garages, dealers, service stations and public sector accounts. The company also sells the ALLDATA brand automotive diagnostic and repair software.

Genuine Parts is engaged in the distribution of automotive replacement parts, industrial parts, and business products. The company's reportable business segments are: Automotive, which distributes automotive parts and accessory items and provides inventory, cataloging, marketing, training and other programs to the automotive aftermarket; Industrial, which distributes industrial replacement parts and related supplies such as bearings, mechanical and electrical power transmission products, industrial automation, and hose, among others; and Business Products, which is engaged in the wholesale distribution of a line of office and other business-related products through a customer base of resellers.