Premium Guard Air Filter PA4878 | Fits 2014-2003 Ford E-150, 2014-2003 Ford E-250, 2018-1999 Ford E-350 Super Duty, 2017-2003 Ford E-450 Super Duty, 2004-1997 Ford Expedition, 2008-1997 Ford F-150, 20 Superior Engine Protection and Enhanced Engine Performance with up to 99% cleaner air flowing into the engine. High capacity air filter media for removal of dust and other debris while providing high airflow, to ensure optimal engine performance. Compatible with Ford E-150 2014-2003, E-150 Club Wagon 2005-2003, E-150 Econoline 2002-1997, E-150 Econoline Club Wagon 2002-1997, E-250 2014-2003, E-250 Econoline 2002-1997, E-350 Club Wagon 2005-2003, E-350 Econoline 1998-1997, E-350 Econoline Club Wagon 2002-1997, E-350 Super Duty 2018-1999, E-450 Econoline Super Duty 2002-2000, E-450 Super Duty 2017-2003, E-550 Econoline Super Duty 2002, E-550 Super Duty 2003, Econoline Super Duty 1999-1997, Excursion 2005-2000, Expedition 2004-1997, F53 200 Replaces F50X-6301-AB, CA8039, AF1615, A34878, and 46418 air filters Premium Guard Air Filters are a perfect fit inside the housing as per the OE design.Always check fitment using the Vehicle Filter. 2003 Ford E-150 4.2L 2003-2014 Ford E-150 4.6L 2003-2014 Ford E-150 5.4L 2003 Ford E-150 Club Wagon 4.2L 2003-2005 Ford E-150 Club Wagon 4.6L 2003-2005 Ford E-150 Club Wagon 5.4L 1997-2002 Ford E-150 Econoline 4.2L 1997-2002 Ford E-150 Econoline 4.6L 1997-2002 Ford E-150 Econoline 5.4L 1997-2002 Ford E-150 Econoline Club Wagon 4.2L 1997-2002 Ford E-150 Econoline Club Wagon 4.6L 1997-2002 Ford E-150 Econoline Club Wagon 5.4L 2003 Ford E-250 4.2L 2003-2014 Ford E-250 4.6L 2003-2014 Ford E-250 5.4L 1997-2002 Ford E-250 Econoline 4.2L 1997-2003 Ford F-150 5.4L (1999:Naturally Aspirated;BI-FUEL, 1999:Naturally Aspirated;GAS, 2000,2001,2002,2003:Naturally Aspirated) <u>Engine Light Comes On</u>: Many cars are equipped with an airflow sensor that sets off the check engine light. <u>Visual Inspection</u>: Premium Guard automotive air filters are white so you can see if they&#039;re dirty. Check the outside and inner layers of the filter paper for dust and debris. <u>Reduced Fuel Economy</u>: When engines get less oxygen, they consume more fuel. If you notice fuel economy going down, you may need to replace the air filter. <u>Engine Misfiring</u>: Restricted air supply results in unburnt fuel exiting the engine as soot residue. Soot accumulates on the spark plugs, which can cause the engine to misfire. <u>Reduced Horsepower</u>: Replacing the air filter can improve acceleration or horsepower. If your car doesnt respond well or jerks when you step on the accelerator, the engine may not be receiving the air it needs to perform. <u>Black Sooty Smoke or Flames</u>: Poor air supply can result in fuel not burning completely during the combustion cycle. Unburnt fuel exits the car through the exhaust pipe, possibly resulting in smoke or flames. Driving conditions Dusty roads Humid climates Congested roads and heavy-traffic areas