U.S. Auto Parts Network, Inc. Announces Completion of Next Generation Online Catalog

Announces Addition of 60,000 SKUs to Unified Catalog

CARSON, Calif., Nov. 8 /PRNewswire-FirstCall/ -- U.S. Auto Parts Network, Inc. (Nasdaq: PRTS), a leading online provider of aftermarket auto parts and accessories, today announced that it has completed the implementation of the unified catalog.

Utilizing new industry standards for year/make/model applications, the unified catalog combines body, engine and performance parts and accessories in one catalog with single look-up functionality. The implementation of the unified catalog will enable U.S. Auto Parts to implement dynamic pricing updates to its sites, more accurately display in-stock items and accelerate the pace of adding new products to the Company's database. Since its implementation in October 2007, the Company has added an additional 60,000 SKUs to its unified catalog.

In addition to the ability to add more SKU's, the unified catalog will permit advanced site search, guided navigation and dynamic merchandising of the Company's sites. This is expected to increase conversion rates by personalizing the customer's shopping experience to deliver more targeted results, and leveraging related items to improve the Company's up-sell opportunity.

"We believe the launch of our unified catalog represents a tremendous achievement for U.S. Auto Parts," said Shane Evangelist, Chief Executive Officer. "With its implementation we should now improve critical aspects of the customer experience through real time updates to our sites and optimized search results. As we look to accelerate our growth in 2008, we expect that the unified catalog will enhance our ability to scale our business by more efficiently adding SKUs to our sites while driving our conversion rate through improved site search and merchandising capabilities."

About U.S. Auto Parts Network, Inc.

Established in 1995, U.S. Auto Parts is a leading online provider of aftermarket auto parts, including body parts, engine parts, performance parts and accessories. Through the Company's network of websites, U.S. Auto Parts provides individual consumers with a broad selection of competitively priced products that are mapped by a proprietary product database to product applications based on vehicle makes, models and years. U.S. Auto Parts' flagship websites are located at http://www.partstrain.com and http://www.autopartswarehouse.com and the Company's corporate website is located at http://www.usautoparts.net.

U.S. Auto Parts is headquartered in Carson, California.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995:

All statements included or incorporated by reference in this release, other than statements or characterizations of historical fact, are forward-looking statements. These forward-looking statements are based on our current expectations, estimates and projections about our industry and business, management's beliefs, and certain assumptions made by us, all of which are subject to change. Forward-looking statements can often be identified by words such as "anticipates," "expects," "intends," "plans," "predicts," "believes," "seeks," "estimates," "may," "will," "should," "would," "could," "potential," "continue," "ongoing," similar expressions, and variations or negatives of these words. These statements include, but are not limited to, the Company's expectations regarding the Company's long-term prospects, future financial operating results and potential growth. These forward-looking statements are not guarantees of future results and are subject to risks, uncertainties and assumptions that could cause our actual results to differ materially and adversely from those expressed in any forward-looking statement.

Important factors that may cause such a difference, include, but are not limited to, the Company's demand for and pricing of the Company's products; the competitive environment in the Company's industry; the Company's ability to expand its product offerings and make changes to its product mix; the volume of product sales; and the gain or loss of customers.

Our Annual Report on Form 10-K, subsequent Quarterly Report on Form 10-Q, recent Current Reports on Form 8-K, and other Securities and Exchange Commission filings discuss the foregoing risks as well as other important risk factors that could contribute to such differences or otherwise affect our business, results of operations and financial condition. The forward-looking statements in this release speak only as of this date. Unless otherwise required by law, the Company expressly disclaims any obligation to revise or update publicly any forward-looking statement for any reason, whether as result of new information, future events or otherwise.

US Auto Parts(R), Auto Parts Train(TM), PartsTrain(TM), Partsbin(TM), Kool-Vue(TM) and Auto-Vend(TM) are among the trademarks of U.S. Auto Parts. All other trademarks and trade names mentioned are the property of their respective owners.

    Investor Contacts:
    Michael McClane, Chief Financial Officer
    U.S. Auto Parts Network, Inc.
    michael@usautoparts.com
    (310) 735-0085

    Anne Rakunas / Laura Foster
    ICR, Inc.
    (310) 954-1100
    anne.rakunas@icrinc.com
    laura.foster@icrinc.com

    Media Contacts:
    Stephanie Sampiere / Matt Lindberg
    ICR, Inc.
    (203) 682-8200
    stephanie.sampiere@icrinc.com
    matthew.lindberg@icrinc.com

SOURCE U.S. Auto Parts Network, Inc.

Released November 8, 2007