K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom-designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles, you simply remove the disposable air filter and replace it with a K&N. See the applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

• Designed to add power & acceleration for BMW N55 Engines.
• Washable & Reusable
• K&N's air filter for the N55 is designed to last the life of your vehicle.
• Designed to boost horsepower and rate of acceleration
• Can be cleaned and used again
• High airflow with exceptional filtration
• Lasts up to 50,000 miles before cleaning is required depending on driving conditions
• Works with original equipment manufacturer vehicle electronics
• Emissions legal in all 50 US states
• Will NOT void vehicle warranty
• Million Mile Limited Warranty®