K&N Cold Air Intake Kit+ Filter 77-2570KTK Econoline 13 for 97-16 Ford E350 5.4L 6.8L Guaranteed to Provide more HP and Increased Acceleration,Engineered to Specific Vehicle Design,Easy to Install, Usually in 90 minutes or less! Replaces OEM Filter and Air Box,Air Filter is Washable and Reusable,Works with Original Equipment Manufacturer Computer Systems Street legal in most states (some not street legal in CA - Check part number or vehicle listing for specific CARB status) Street Legal In All US States: Yes (Exc. 97-16 Cutaway,15-16 Super Duty), CARB EO Number: D-269-48, Replacement Filter: RC-5046, Filter Size Inlet: 6" Vehicle Application: Ford 1997 1998 1999 2000 2001 2002 2003 3004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 E350 5.4L V8 6.8L V10