The premium filter design incorporates multiple layers of proprietary cotton gauze media and a specially-engineered oil, originally designed for the demands of the racetrack, and now custom-engineered for your vehicle. K&N E-3743 round high-performance replacement air filter is reusable and engineered to last for the entire lifespan of your vehicle View testing data for many K&N filters on individual product pages. LOW-MAINTENANCE DESIGN: 50,000 miles before your first cleaning under normal highway driving conditions REDUCES WASTE Over 100 million disposable air filters and their packaging waste end up in landfills each year. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains ENGINEERED POWER: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10% WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants ENGINEERED FOR PERFORMANCE Originally designed for high-performance on the racetrack, now custom-designed for your vehicle make and model. E-3743 Engine Filter K&N Engine Air Filter: High Performance, Premium, Qatar Lifetime Air Filter Increase Horsepower EASY INSTALLATION: Pre-oiled and ready to drop into your factory air box. K&N 33-3065 performance air filter is designed for high air flow while maintaining filtration levels critical to ensure long engine life of your car or... SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters K&N E-3743 Washable and Reusable Car Air Filter/Direct Kits Trusted on the racetrack—made for your vehicle
