Cabin Filter. K&N’s line of washable replacement cabin air filters are built to filter your incoming air using state-of-the-art filtration technology - protecting your vehicle’s occupants, interior, and HVAC system from pollutants and unpleasant odors. Engineered to be washable, reusable, and durable, this cabin filter is built to last for the entire lifespan of your vehicle! INCREASED AIRFLOW IMPROVES HEATING/COOLING EFFICIENCY. HELPS CONTROL ODORS: Treated to help capture contaminants that cause odors. Dirty disposable cabin filters can cause a musty smell in your car’s interior SAVE MONEY : Washable product that lasts Straightforward fitting: Pre-treated and ready to drop into your factory air box. Typically installs in less than five minutes with no tools required WASHABLE AND REUSABLE: Engineered to last for the life of your vehicle ECO-FRIENDLY: Using a washable, reusable product reduces landfill waste from disposable filters. More than 200 million disposable air filters end up in landfills each year. NO-HASSLE WARRANTY: No-Hassle Lifetime Limited Warranty Engineered for LONG-LASTING PERFORMANCE AND QUALITY. Application: BMW 630I BMW 635D BMW 650I BMW M6 BMW 520D BMW 500I BMW 525I BMW 530I BMW 550I Alpina *By request/order.