Keep your motor’s lungs fed with clean, energy-rich oxygen from the “the world’s best air filter”—K&N Air Filters. Constructed from pleated sheets of oiled cotton gauze, these air filters strip away grime without blocking airflow. Fully reusable. Million Mile Limited Warranty.
Say goodbye to the days of re-oiling your reusable performance filter—innovative aFe Pro-Dry S Air Filters boast a 100% oil-free cotton gauze construction for wicked airflow. Easy to clean and reuse. The Pro-Dry S Air Filter is backed by a Lifetime Warranty.
Put to rest the ghosts of paper air filters past by exorcizing your air system with a Spectre Air Filter. Masterfully constructed from pleated cotton gauze, these performance air filters trap dirt while still allowing energy-rich air to blast through. Reusable. Lifetime Warranty.
Get maximum filtration with the Airaid SynthaMax Air Filter. Featuring 5 layers of non-oiled, 100% synthetic fiber, this reusable air filter directly replaces your factory paper filter with no modifications. Washable in household detergent and reusable for life. Lifetime Warranty.
Drop in optimal engine filtration and performance with the Airaid SynthaFlow Air Filter. Replacing flimsy factory paper filters, this high-performance filter combines multiple oiled cotton gauze and synthetic fiber layers to deliver ultimate airflow and protection. Lifetime Warranty.
When you equip your engine bay with an aFe Air Filter, you’ll never need another performance air filter in your ride’s life. aFe expertly crafts your automotive air filter from high-quality cotton gauze to trap grime without blocking airflow. Cleanable and reusable. Lifetime Warranty.
Not sure which 1999 Ford Mustang Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"My husband bought a used Mustang and asked our mechanic to check it out and to make recommendations about adding power. NOS is out of the question, and we already had the best mufflers, so our mechanic said to buy a K&N Air Filter. The very next day, I went online and bought one. Right after it arrived, my husband installed it, and took it for a ride. He was so amazed and excited. He said that the car drove better; it was a much "smoother" ride. With the long-life guarantee, it was well worth the cost!" —Patricia S from Aberdeen, NJ bought a K&N Air Filters for a 1999 Ford Mustang.
"I have K&N filters in my truck and my Cadillac. Easy to install work great GRH" —George H from Pensacola, FL bought a K&N Air Filters for a 1999 Ford Mustang.
"Installed it on our 2000 Lexus RX300 with over 260,000 miles and it has more power, but clearly getting 1 MPG more average of highway and city driving. Won't be long before it pays for itself." —Joe M from Monument, CO bought a K&N Air Filters for a 1999 Ford Mustang, 3.0L V6.