<P> On January 30, 1998, O'Reilly merged with Hi / LO Auto Supply, adding 182 auto parts stores in Texas and Louisiana, as well as a distribution center in Houston, Texas . The Hi / LO acquisition made O'Reilly one of the top 10 auto parts chains in the country . On April 25, 2000, the firm announced the purchase of KarPro Auto Parts, which included a 66,000 square foot distribution center in Little Rock, Arkansas, and 14 KarPro stores . </P> <P> On October 1, 2001, O'Reilly purchased Mid-State Automotive Distributors, Inc., adding 82 additional auto parts stores in seven states, as well as two distribution centers . The acquisition made the firm one of the top five auto parts chains in the country . It added its eleventh distribution center in Atlanta, Georgia, in March 2005 . </P> <P> On May 31, 2005, O'Reilly purchased Midwest Automotive Distributors, Inc., adding 72 retail locations in Minnesota, Montana, North Dakota, South Dakota, Wisconsin, and Wyoming, as well as two distribution centers located in Minnesota and Montana . </P> <P> On July 11, 2008, the company completed the largest acquisition in its history with the purchase of CSK Auto, adding 1,273 stores in 12 states . This, combined with past acquisitions, made O'Reilly the third largest auto parts chain in the country after Advance Auto Parts and AutoZone . </P>

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