K&N High-Flow Air Filter - E9X 335i/xi E82 135i with N55 engine - 2011+

Improve your 2011+ N55 equipped 1 series or 3 series series intake air flow., simply by removing the restrictive stock paper air filter element out, and replacing it with a high performance K&N drop-in air filter. Installs in your airbox in only minutes. 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 virtually every vehicle 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 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. [More Information on Replacement Air Filters]

This item fits the following BMWs:
2011+ E82 BMW 135i
2011+ E90 BMW 335i 335xi 335i xDrive - Sedan
2011+ E92 BMW 335i 335i xDrive - Coupe
2011+ E93 BMW 335i Convertible