BRAND NEW PART# 3093 Fits 1999-2005 Dyna models Dipsticks vent/breathe excessive crank case pressure from the oil tank through a PCV style breather, consisting of an oil separator system, perforated disc, replaceable filter element and umbrella flapper valve These breathing dipsticks remove unwanted build-up of blow by pressure in the oil tank Screw into the factory oil fill spout as a stock replacement part (OEM 62853-99)