Reusable Performance Drop-In Filter Getting a new air filter for your truck is all well and good, but getting one that improves your F150's performance while being the last air filter you'll ever need is even better. This Airaid SynthaFlow drop-in replacement air filter for the 2004 to 2008 5.4L F150s is a permanent replacement for OE-style paper filters thanks to it washable and reusable design. Airaid's filter saves you some big bucks in the long run all while allowing a larger volume of air into your truck's intake system for nice power, throttle response, and fuel economy gains. While the filter does improve airflow, it also is more effective at cleaning inbound air, keeping your truck's 5.4L Triton V8 running clean and mean.
Advanced Oiled Filtration Media Airaid's SynthaFlow replacement air filter is manufactured out of tightly-woven synthetic fibers and come doused in a specialized filter oil that work together to capture finer particulates and keep more dust, dirt, and debris out of your F150's engine. Airaid's filter is a simple, drop-in replacement for your tuck's factory paper filter and requires no modifications or custom PCM tuning to your F150.