Muffler Exhaust Gasket fits Honda GX 240, GX 270, GX 340, GX 390, 18381-ZE2-W10, Oregon 50-423, Rotary 23-13518 Muffler Exhaust Gasket Honda GX 240, GX 270, GX 340, GX 390 Honda OEM # 18381-ZE2-W10 Oregon # 50-423 Rotary # 23-13518