K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: Compatible with Compatible with Select ONAN Engines (See Description for Fitment Information), E-4550

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%

EASY INSTALLATION: Pre-oiled and ready to drop into your factory air box. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains

SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters

ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste. A K&N filter will last longer than 10 disposable filters

WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants

LOW-MAINTENANCE DESIGN: 50,000 miles before your first cleaning under normal highway driving conditions

HIGH QUALITY: Made in America

RACE TESTED: The Official Air Filter of NASCAR. Trusted on the racetrack—made for your vehicle