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 6.6L DURAMAX DIESEL BLACK - 5130811000 Machined air channel on threads to bleed air (Beware of imitation bleeder screws without an air channel) People know that billet aluminum is a lot tougher than plastic. That toughness means fewer problems over time. So replace your fragile plastic, factory air bleeder screw with the longer-lasting billet aluminum PPE Air Bleeder Screw. The damage and distortion happens naturally with a plastic screw from routine servicing will no longer be a problem because PPEs Air Bleeder Screw features billet aluminum construction and a Nitrile O-ring seal. Bio diesel compatible Nitrile O-ring Available for 2001-2016 6.6L GM Duramax diesel engines