The K&N 33-5029 is a washable panel air filter built on layered, oiled cotton media, and it ships pre-oiled to fit the factory airbox in place of the paper original. The manufacturer says it is designed for high air flow while maintaining filtration levels meant to protect long engine life. Multiple layers of premium cotton gauze, treated with a tacking agent, form the filter media, and K&N backs stock replacement filters with a no-hassle lifetime limited warranty, subject to limitations.
Against a stock disposable paper element, the reusable gauze design lets you clean and re-oil the filter rather than buying a new one at each interval. The manufacturer puts the cleaning interval at about 75,000 miles under normal highway driving. The manufacturer does not publish a horsepower figure that could be confirmed, so treat this as an airflow upgrade rather than a guaranteed power gain. The Mustang GT 5.0L listing on the manufacturer's site shows fitment for 2015 through 2023, but other sources give different year ranges, so confirm your VIN with the manufacturer before ordering a 2015 2.3L, 3.7L, or 5.0L car.
Yes. The manufacturer states that the filter needs cleaning roughly every 75,000 miles under normal highway driving, which it bases on 15,000 miles per year.
The manufacturer describes it as pre-oiled and ready to drop into the factory air box, so no modifications are described for installation.
The manufacturer lists a re-oiling amount of 1.71 oz (51 ml) for this filter.
The manufacturer describes this filter as a drop-in swap into the factory air box, so the job centers on opening the airbox, removing the paper element, and seating the K&N in its place. The specific tools and step-by-step sequence were not confirmed during research, so follow the instruction sheet packed with the filter and your vehicle's airbox procedure. After each cleaning, re-oil the gauze with the manufacturer's 1.71 oz (51 ml) amount and let the filter sit so excess oil can drain before reinstalling.
