74-81 K&N Air Cleaner / Filter Element

Adds 5-10 HP! Million mile warranty. K & N air filters actually increase air flow, thus improving horsepower and gas mileage. Here's how: dust and dirt remain on the outer surface of the filter, allowing virtually unrestricted air flow, rain andmist are atomized as they pass through the K&N oiled fabric element, and excessive oil blow-by from emission control devices will not clog the specially-treated element. Repeated tests on dynamometers reveal consistent increases of 3-5 HP, and theirclean and re-use feature makes these filters one of the best buys available today.