The K&N E-4495 is a direct replacement oiled cotton gauze air filter, intended for use on some Thermo King models. It’s an excellent option to help your refrigeration unit keep your trucks cool. K&N air filters provide high air flow and excellent filtration. This air filter allows your engine to breathe more efficiently by reducing restriction. Superior engine protection gives you peace of mind. K&N air filters are washable and reusable. With proper maintenance, K&N air filters can protect your equipment for years, sometimes for even longer than the engine’s lifetime.