K&N Engine Air Filter: High Performance, Washable, Replacement Compatible 1971 1992 BMW (M3, 635CSi, 316i, 535iS, 318i, 518i, 525i, 528i, 535i, 628CSi, 735i, M535i, 323i, 728i, 732i), 33 2005

ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle. 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.