Premium Guard Air Filter PA5403 | Fits 2006-2001 Acura MDX and 2008-2003 Honda Pilot 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 Acura MDX and Honda Pilot. Precisely designed, engineered, and tested to meet and exceed all Honda and Acura OE air filter requirements. Replaces 17220-PDJ-J00, CA9361, AF7998, A35403, and 46802 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. <span class="a-text-bold">2</span>001-2006 Acura MDX 3.5L 2003-2008 Honda Pilot 3.5L <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