AIRFILTER PRE-OILED AIRFILTER GAS GAS/RIEJU EC/XC 250-300 18-20, MR250-300 21-23

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.