Polyurethane foam provides excellent air flow !
A K&N replacement air filter is designed to improve vehicle performance, provide excellent engine protection and last the life of your car, truck, motorcycle, ATV and more. K&N air filters are easy to install and come with the worry-free K&N Million Mile Limited Warranty.K&N automotive replacement air filters are designed to add horsepower and acceleration to your car or truck by providing up to 50% more air flow. More air flow can result in crisper throttle response and more torque throughout the engine RPM range. K&N air filters are made up of multiple layers of oiled cotton filter media that not only provide superior air flow but also excellent filtration to ensure long engine life. Made for virtually every vehicle on and off the road and they are custom designed to fit into your specific vehicle’s factory air box. Instead of swapping out your old paper air filters over-and-over again, with K&N you simply drop in a K&N replacement air filter once and you’ve boosted the lifetime performance of your vehicle in as little as 5 minutes !