Active Autowerke Drop-In Air Filter Kit - Bmw E9X 335 N55 2011
The Active Autowerke N55 performance filters is designed from inception to have that BMW factory like appeal added with the Active Autowerke philosophy to deliver true performance. The end result is a direct drop-in style fitment that lets your engine breathe more effortless while delivering dyno proven horsepower gains.
The Active Autowerke Green Performance Air Filters are uniquely designed to take full advantage of cottons capabilities. Unlike multi-layer gauze filters which can fray and release fiber particles into your engine, our filters uses two layers of tightly-interwoven cotton fabric. The 3 main benefits to woven cotton are the fact its thinner, holds oil better, and is stronger. Since its thinner, it allows better air flow without sacrificing filtration. The cotton holds the oil more evenly, and the medium is much stronger. Unlike gauze, you cannot wear a hole in woven cotton by rubbing it, and there is no way small bits of cotton can rip off since its interlocked with another piece.
Cross weaving one fine, and one medium layer, produces a fabric that is thinner and stronger than other materials and has the ability to trap dirt up down to 5 microns. The result is better airflow without sacrificing filtration. And because the fabric is so durable, they can be washed and reused over and over, which allows us to give it a lifetime guarantee.
- Hand molded flexible rubber base on filters.
- Green Filter USA rubber molds create air tight seals. We also feature trim-able custom fitment tabs on all filters.
- Green Filter USA uses deeper air filter pleats which creates 20% more filtration surface.
- Race proven gains and technology.
Images are for representation purpose only and may differ depending on application.