This is the Worlds Finest Oil Filter ! From K & P Engineering, this finned billet aluminum filter should be the last filter you buy ! Featuring: Re-useable 304 Stainless Steel Element, 7 Times more flow than paper filters, Magnetic Pre-Filter, Easy Element Inspection & Cleaning, Finned Housing Helps Reduce Oil Temp, Model S4 Fits All Big Twin 1984 tru 1998, Twin Cam 1999 to 2008, Sportster 1985 to 2008, Machine Finish Housing, Includes instructions and filter wrench. FREE SHIPPING in Continental US