[Compatible With] For STIHL FC75, FC85, FH75, FS75, FS80, FS80R, FS85, FS85R, FS85RX, FS85T, HL75, HL75K, HT70, HT70K, HT75, KA85R, KM85, KM85R, KW85, PC70, PC75, SP80, SP80K, SP81, SP85.[Reduce Noise] The engine exhaust helps to greatly reduce the exhaust noise, making it more pleasant for the operator and neighbors.[Easy Installation] The specifications of our exhaust are exactly the same as the original, the replacement job will be quick and easy.[Better Durability]Our mufflers are made from reliable materials and are coated with heat-resistant paint to reduce noise.[Package Includes] 1 exhaust muffler, 3 gaskets. OEM Part Number: Exhaust Muffler: 4137 140 0602, 4137 140 0603. Exhaust Gasket: 4137 129 0905. Carburetor Gasket: 4137 129 0900. Muffler Gasket: 4137 149 0600