Fitment: For GX120 GX160 GX200 4HP 5.5 HP 6.5HP 4-Stroke Engine Motor Trimmer Generator Water Pump Lawnmowewrs Replace OEM Part No. For 18310-ZF1-000, 18320-ZF1-H51 Replace For Oregon 35-038 Include: 1 x Muffler Exhaust Assy