Mitsubishi Motors North America (Mitsubishi) is recalling certain model year 2008-2011 Lancer, Lancer Evolution, and Outlander; 2009-2011 Lancer Sportback, Lancer Rilliart, and Lancer Sportback Ralliart; and 2011 Outlander Sport vehicles. The affected vehicles, manufactured with 4B1 engines, have an engine pulley and belt arrangement for turning the alternator, the cooling fan and the power steering pump (if equipped). These pulleys may experience unusual wear and allow for belt detachment.