Dieselsite 4" Inlet Washable Air Filter - Universal (Black)

Dieselsite 4" Inlet Washable Air Filter - Universal (Black) The largest open air filter replacement available- and NOW with a 4" inlet for easy retrofit from many styles of open air intake kits or most DIY units. Even the end cap has an inverted filter for increased surface area. Filter is pre-oiled; use your favorite air filter cleaner when servicing.