The paper Air Filter element most Porsche models must be discarded after 12,000 miles. The K&N Panel Filter need never be replaced! The filter also improves power and torque by allowing more air into the engine for a given throttle opening. The standard paper element (when new) flows 508 CFM compared to the K&N Filtercharger's 887 CFM - a 75% improvement. This is due partly to the increased surface area over the standard filter and special gauze and screen construction offering very little resistance to incoming air. Because of the reduced turbulence the increased air volume experiences when entering the filter - engine performance is increased.

The K&N Filtercharger Air Filter is totally unique. K&N use premium quality oiled cotton gauze sandwiched between layers of wire screen. This special design permits very high flow rates, minimum restriction, maximum filtration and very long filter life. When dirty, simply wash, re-oil and install! The filter can be used for up to 50,000 miles before cleaning is required. When extremely soiled, the filter should be cleaned with K&N Filter cleaner, reverse flushed with water and then re-oiled. The oil (that is held in suspension by the cotton gauze) is an essential part of the filter media - and acts to stop even the smallest dirt particles from entering your engine.