PPE Air Bleeder Screw for Fuel Filter Housing 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Chevy GMC Duramax Diesel 513081000 Machined air channel on threads to bleed air (Beware of imitation bleeder screws without air channel) Bio diesel compatible Nitrile O-ring Available for 2001-2016 Duramax diesel engines Most people know that billet aluminum is a lot tougher than plastic and that toughness means fewer problems over the long haul. So, replace your fragile plastic factory air bleeder screw with the longer lasting billet aluminum PPE Air Bleeder Screw. Damage and distortion that comes naturally with a plastic unit from routine servicing will no longer be a problem because PPEs Air Bleeder Screw features a Nitrile O-ring and billet aluminum construction. Gold/Yellow 513081000