K&N Custom XD Air Filter - Round 14in OD x - E-3978XD

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K&N XD air filters use a Deep Pile Design, Extra Fine Weave Grade Cotton and alternate geometries for added efficiency and capacity for off-road conditions. This extra thick filtering medium provides the increased protection demanded by high dust conditions while continuing to provide the performance necessary to stay in the front of the pack. The XD Cotton medium was developed for the extreme conditions encountered by race teams in the Baja 1000. This real world testing is combined with testing performed at K&N's own Dust Retention Laboratory in conformity with the ISO 5011 test protocol. XD Cotton Air filters can be cleaned in the same way as K&N's original cotton air filters.

K&N XD air filters use a Deep Pile Design, Extra Fine Weave Grade Cotton and alternate geometries for added efficiency and capacity for off-road conditions.

K&N Custom XD Air Filter - Round 14in OD x 5in H. Filtro de aire redondo. Filtre à air rond. Round Air Filter. Air Filter

Air filters are essential when it comes to your vehicles performance and protection. Shop from our list of air filters from brands like K&N, AEM, Injen, Spectre, Air Raid, aFe, and many more!

Replacing your OEM air filter with a drop in airfilter is a great way to increase airflow without replacing your entire air intake system. Replacing your air filter is cheap, fast, and easy. Another benefit of replacing your OEM filter with a drop in filter is that your can wash your drop in filter. your will never have to replace your OEM filter again.

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For over 50 years, K&N® has been an industry-leader in automotive filtration and technology—offering products to increase performance, protection, and longevity in thousands of vehicle applications for consumers worldwide. HISTORY In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an air filter—one that could perform under the demands of dusty, dirty off-road environments. After experimenting with numerous types of filter media, they discovered that an oiled cotton design allowed the filter to not only capture contaminants very efficiently, but also allowed it to be washed and reused, and the original K&N® High-Flow Air Filter™ was born. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe.