Air Filter (Dry Extendable) for Intake Kits: 75-5018 is an S&B dry extendable replacement air filter for intake kit 75-5018. It is intended as a service replacement for compatible S&B intake systems, so the intake kit number should be matched before ordering. Cotton cleanable filters require the proper cleaning and oiling process, while dry extendable filters should be serviced according to dry-media guidance. Original description written for S&B part KF-1036D using the row's SKU, media, and title data.