O'Reilly Automotive, Inc.
- National chain of auto parts stores. Includes news, store locator, and parts search.
- http://www.oreillyauto.com/

CARQUEST Auto Parts
- Chain of auto parts stores with locations in the U.S., Canada and Mexico Includes tool & equipment catalog, store locator, training information and employment opportunities.
- http://www.carquest.com/

Parts Plus
- Chain of auto parts stores and car care centers. Includes location finder, brands, and training information.
- http://www.partsplus.com/

CSK Auto Corporation
- Automotive parts and accessories retailer. features store locations, online shopping facilities, and employment opportunities. ( NYSE: CAO ).
- http://www.cskauto.com/

AutoZone, Inc.
- National chain of auto parts stores, based in Memphis. Includes store locator, repair guides and maintenance tips.
- http://www.autozone.com/