K&N Air Filter Round Tapered RX-3990-1

• Designed to increase horsepower and acceleration while providing exceptional engine protection.• K&N Air Filters are made of 4 to 6 layers of cotton gauze sandwiched between two epoxy-coated aluminum wire screens• K&N Air Filters allow dramatically more air into an engine• K&N Air Filters are washable, reusable, and will protect your engine if serviced correctly• One year limited warranty