AIRFILTER PRE-OILED YAM YZ125-250 97-23, YZ125-250X 16-23, YZ250F 01-13, YZ450F 03-09, WR250F 01-02

Original Dual-Stage Air Filter completely submerged in Filter Oil. The filter is then massaged to ensure all pores are evenly coated with oil, it is then placed in a temperature-controlled room to allow the oil to completely cure. All you have to do is open the bag and install.