Radiator Cap Fits 2007 to 2011 JK Wrangler, Rubicon and Unlimited with 3.8L 6 cylinder engine;2 and 4-door models;Fits 1999 to 2002 WJ Grand Cherokee with 4.0L 6 cylinder engine JEEP WRANGLER (JK) ISLANDER MOUNTAIN RUBICON SAHARA SPORT UNLIMITED ISLANDER UNLIMITED MOUNTAIN UNLIMITED RUBICON UNLIMITED SAHARA UNLIMITED SPORT UNLIMITED X X 2007 2008 2009 2010 2011 2013 3.6L ERB (220) Pentastar 3.8L (3778cc) GAS Jeep Jeep Radiator Cap - 55116901AA 55116901AA Radiator & Reservoir Caps