S&B Filters KF-1042D High Performance Replacement Filter (Dry Extendable) This filter is a dry extendable media and is ready for installation Extend the life of our dry filters: Using compressed air, blow off the outside of the dry filter keeping the air nozzle moving and no closer than 6 inches to the media 4" Flange ID S&B Cold Air Intake fitment specific. This filter fits S&B Filters 75-5028D Cold Air Intake