WASHINGTON -- United Components Inc. (UCI), an Evansville, Ind.-based auto parts manufacturer, announced late last week that it was notified that the U.S. Department of Justice (DOJ) has officially closed its investigation into possible collusion in the replacement auto filters industry.

UCI was one of several filter manufacturers named in the investigation, which began in 2008. The investigation looked into complaints by numerous direct and indirect filter purchasers that alleged collusion existed within the filters market.

While the DOJ has closed the case with no action taken, an April 2008 civil class action lawsuit into the matter remains ongoing.