K&N 33-2367 High Performance Replacement Air Filter
The K&N 33-2367 Air Filter fits some BMW 1 Series M, BMW 135i, BMW 335i, BMW 335i xDrive, BMW 335is, BMW 335xi, BMW 535i, BMW 535i xDrive, BMW 535xi, BMW Z4, BMW Z4 3.5 sDrive i, and BMW Z4 sDrive 35i models.
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.
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