Premium Guard Air Filter PA5566 | Fits Ford Five Hundred 2007-2005, Freestyle 2007-2005, Mercury Montego 2007-2005 Superior Engine Protection and Enhanced Engine Performance with up to 99% cleaner air before it flows into the car's engine. High capacity air filter media for removal of harmful airborne particles such as dust, pollen, and other debris while providing high airflow, non-restricting airflow, to ensure optimal engine performance which improves vehicle miles per gallon. Compatible with Ford Five Hundred, Freestyle; Mercury Montego. Precisely designed, engineered, and tested to meet and exceed all Ford, Mercury OE air filter requirements. Premium Guard Air Filter are perfect fit inside the house as per the OE design Replaces FORD F59Z-9601AA air filters. Always check fitment using the Vehicle Filter. 2005-2007 Ford Five Hundred 3.0L 2005-2007 Ford Freestyle 3.0L 2005-2007 Mercury Montego 3.0L <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