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Washable and reusableDesigned for industrial applicationsHigh air flow with excellent filtrationEase of maintenanceLifetime Limited WarrantyThe K&N E-4400 replacement air filter is constructed using an oil-free synthetic media. The E-4400 is easy to install and is custom designed to fit some Kohler and Tecumseh engines, as well as other applications. E-4400 high performance air filter provides outstanding filtration protecting your equipment's engine. This K&N air filter can be cleaned and used again.