K&N Engineering >2013-2019`Ford`F-350 Super Duty`Platinum~2011-2019`Ford`F-350 Super Duty`XL~2011-2019`Ford`F-350 Super Duty`XLT~2011-2018`Ford`Flex`Limited~2011-2018`Ford`Flex`SE~2011-2018`Ford`Flex`SEL~2011-2012`Ford`Flex`Titanium~2009-2018`Ford`Focus`S