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Not legal for sale in California K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N\'s No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N\'s most popular product!K&N Engine Air Filter: High Performance, Washable Premium Filter, 33-3079
K&N performance High-Flow Air Filters are engineered to improve engine performance by increasing airflow up to 50%. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your vehicle. K&N air filters are backed by our famous 10-Year/Million Mile Limited Warranty, and they provide an environmentally friendly way to reduce landfill waste by avoiding disposable filters. Engineered to fit easily into your factory air box, installation can be completed in a matter of minutes! K&N develops and tests each product on the world’s toughest race tracks, so we can bring the highest level of performance to your daily driving. Join the millions of customers who have saved money and improved vehicle performance by upgrading to K&N filtration.
Vehicle Fitment: 2015-2020 BMW 740i; 2018-2020 BMW 740i xDrive; 2018-2019 BMW 518d; 2016-2019 BMW 520d; 2017-2019 BMW 520i; 2017-2019 BMW 525d; 2016-2019 BMW 530d; 2017-2019 BMW 530e; 2018-2019 BMW 530e xDrive; 2016-2019 BMW 530i; 2017-2019 BMW 530i xDrive; 2017-2019 BMW 540D; 2016-2019 BMW 540i; 2017-2019 BMW 540i xDrive; 2018-2019 BMW 620d GT; 2017-2019 BMW 630d GT; 2017-2019 BMW 630i GT; 2017-2019 BMW 640d GT; 2017-2019 BMW 640i GT; 2015-2019 BMW 730d; 2015-2019 BMW 740d; 2018-2019 BMW 740e xDrive; 2018-2019 BMW 840D; 2018-2019 BMW X3; 2018-2019 BMW X3 18d; 2018-2019 BMW X3 20d; 2018-2019 BMW X3 20i; 2019 BMW X3 25d; 2018-2019 BMW X3 30d; 2018-2019 BMW X3 30i; 2019 BMW X3 M40d; 2018-2019 BMW X3 M40i; 2019 BMW X4 20d; 2019 BMW X4 20i; 2019 BMW X4 25d; 2019 BMW X4 30d; 2019 BMW X4 30i; 2019 BMW X4 M40d; 2019 BMW X4 M40i; 2019 BMW X5; 2019 BMW X5 30d; 2019 BMW X7 30dX; 2019 BMW X7 40iX; 2019 BMW X7 xDrive40i; 2018 BMW 620d; 2015-2018 BMW 725d; 2016-2018 BMW 730i; 2016-2018 BMW 740e; 2018 BMW X4.
ENGINEERED POWER: State-of-the-artfiltration media provides up to 50% more airflow than disposable paper filtersto increase power and acceleration. Clogged or dirty air filters can reduceyour vehicle’s acceleration by up to 10%.EASY INSTALLATION: Pre-oiled and ready todrop into your factory air box. One of the easiest and most cost-effectiveupgrades for your vehicle for quick performance gains.SAVES MONEY: K&N high-flowreplacement air filters will save you $250 over 10 years by avoiding Using a washable, reusableproduct helps reduce replacement waste. A K&N filter will last longer than10 disposable filters.WORLD CLASS PROTECTION: Pushing the limits ofengine protection by protecting your engine from harmful contaminants.LOW-MAINTENANCE DESIGN: 50,000 miles before yourfirst cleaning under normal highway driving conditions.HIGH QUALITY: Made in America.RACETESTED: The Official Air Filter of NASCAR. Trusted on the racetrack—made foryour vehicle. 
