1998 Ford Expedition Air Filter K&N

Replacement Air Filter

Tapered Conical; H-8 in.; ID-4 7/16 in.; OD-8 in./3 7/8 in.

K/N s replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection; and are covered by K/N s No-Hassle Lifetime Limited Warranty.

Air Filter

K&N Engineering, Inc. provides reusable cotton gauze filter technology products for automotive applications. Its products include air filters, such as stock replacement air filters and universal air filters; intake kits, including air intake systems, injection performance kits, and high flow intake kits; and oil filters and marine oil filters. The company also offers various performance products and accessories, such as filter wraps, cleaning accessories, custom assemblies and lids, top air filters, crankcase vent filters, covered crankcase vent filters and valve cover adapters, flow control air filter assemblies, filter minder, and marine products. In addition, it offers various accessories, including carbon fiber composites; snowmobile products; off-road, UMP air box, and VW carburetor air filters; fuel injection air boxes; injector stack filters; kart filters; plenums and weber adapter; custom air cleaners; industrial and small engine air filters; fuel injection line air filters; air horns; air filter accessories; scoop air filters and cone air filters; air/fuel ratio monitors; flywheel/rotor pullers; and fuel filters. The company offers its products to automotive, motorcycle, marine, industrial, and military markets. K&N Engineering, Inc. was founded in 1969 and is headquartered in Riverside, California with an additional office in Warrington, United Kingdom; and the Netherlands.