The new company, PartsAmerica.com, is expected to become the largest automotive parts and accessories e-commerce destination in the $90 billion automotive parts and accessories market. PartsAmerica.com will serve both the consumer and commercial markets.

Advance Auto Parts, based in Roanoke, Va., is a retailer of automotive parts and accessories through more than 1,600 stores in 37 states, located primarily in the eastern and midwestern regions of the United States, Puerto Rico and the Virgin Islands.

CSK Auto, based in Phoenix, Az., is a retailer of automotive parts and accessories through more than 1,100 stores located primarily in the western United States operating under the trade names of Checker Auto Parts, Schuck’s Auto Supply and Kragen Auto Parts.

Unlike virtual websites relying on a patchwork of automotive part wholesalers, PartsAmerica.com will leverage the existing infrastructure of over 2,700 CSK Auto and Advance Auto Parts stores in 50 states, as well as their 3,000 delivery vehicles and 59 state-of-the-art distribution facilities to the benefit of PartsAmerica.com customers.

CSK Auto and Advance Auto Parts’ combined annual marketing budget of more than $100 million, along with the 4 million customers that visit their stores weekly, will give vast exposure to the PartsAmerica.com brand name. Additionally, PartsAmerica.com customers will benefit from prompt delivery and competitive pricing based on the availability of Advance Auto Parts and CSK Auto’s more than $1 billion in inventory and their unparalleled buying power.

PartsAmerica.com will offer both retail and commercial customers the widest available selection of automotive parts and delivery options, including same-day delivery, local in-store pickup, and overnight shipment.

In addition, because of the 50-state coverage, customers will be able to return or exchange merchandise at their local CSK or Advance Auto Parts store.

Prior to the PartsAmerica.com official launch date, customers can order parts and accessories through CSK Auto’s existing e-commerce site, cskauto.com, which will be incorporated into PartsAmerica.com.

CSK Auto and Advance Auto Parts will own equal stakes in PartsAmerica.com. Sequoia Capital will be the lead investor with additional funding from CSK, Freeman Spogli & Co., Sears, Roebuck & Co. [NYSE:S] and Ripplewood Holdings LLC.

Maynard Jenkins, Chief Executive Officer of CSK, commented: This joint venture represents another important step in the implementation of CSK’s Internet strategy. Great distribution will be the critical factor in determining who the winners are in e-commerce. With a presence in 50 states, PartsAmerica.com will be able to serve customers anywhere in the United States on a same-day basis and allow them to interact with our combined store base, giving it a significant advantage over Internet-only businesses. This industry is ripe for our entrance, he added, because a significant number of auto parts buyers have access to the Internet and have made a purchase online.

Advance Auto Parts’ Chief Executive Officer Garnett Smith said, As the Internet becomes an important distribution channel for traditional retailers, Advance and CSK have a clear advantage in the auto parts category. We already have in place the extensive logistics and infrastructure required to handle the large variety of auto parts in demand by customers.

Tom Stephenson, a Sequoia Capital partner, said, Our investment in PartsAmerica.com represents our first partnership with bricks and mortar retailers in the U.S. We’re confident that PartsAmerica.com’s business model is far superior to any option that exists for the consumer today.

Sequoia Capital is a leading Silicon Valley venture capital firm with a strong record of funding successful Internet companies, such as Yahoo (www.yahoo.com), Etoys (www.etoys.com), Scient (www.scient.com) and Webvan (www.webvan.com).

Advance Auto Parts is the trade name for Advance Stores Company, Incorporated, a wholly owned subsidiary of Advance Holding Corporation. Advance Holding Corporation’s primary shareholders are: Freeman Spogli, a leading private investment firm based in Los Angeles and New York, with extensive experience in retail and in direct marketing; Sears and Ripplewood Holdings, a private investment company.