S&B Filters KF-1000 High Performance Replacement Filter (Oiled Cleanable, 8-ply Cotton) This Filter is an Oiled Cleanable Cotton Filter that comes pre oiled ready for installation Oil Amount: 100 Grams on Filter Element Square filter with a 4" Flange ID, and a solid black rubber top S&B Cold Air Intake Specific, be sure to confirm fitment. Fits S&B Filters 75-5125 & 75-1532 Cold Air Intakes