S&B Filters: Air Intake System - 2008-2009 Ford F250, F350, F450 6.4L Diesel - Part # 75-5018S&B"s performance intake kits are all about improving your vehicle"s engine. It"s just a matter of exceptional design. Quicker Acceleration: Reduces Turbo Lag More Power: custom air box for cool, dense air Improves Fuel Economy: lower EGT"s and air resistance Guaranteed Engine Protection: tested to the ISO 5011 Filtration Standards.Fits 2008 models manufactured after 6/07.