1、Chainsaw accessory, fit for Stihl MS270 MS280, and the replacement OEM part numbers are 1133 020 1203, 1133 120 1604. 2、Including cylinder, piston assembly, air filter cover, fuel filter, pressure reducing valve, spark plug, needle bearing, hose and oil seals. 3、Using high quality aluminum alloy, iron and plastic materials, it is durable and sturdy, long lasting, wear resistant. 4、Garden tool parts, professional manufacturing, exquisite craftsmanship and high accuracy help to provide the best performance. 5、Stable performance, can effectively extend the service life of the machine, and perfectly match your chainsaw machine. Item Type: Cylinder Piston Set Material: Aluminum Alloy, Iron, Plastic Weight: Approx. 761g / 26.8oz Replace OEM Part Number: 1133 020 1203, 1133 120 1604 Cylinder Bottom Hole Diameter: Approx. 46mm / 1.8in Applicable Model: For Stihl MS270 MS280 1 x Cylinder 1 x Piston Assembly (6Pcs) 1 x Air Filter Cover 1 x Fuel Filter 1 x Pressure Reducing Valve 1 x Spark Plug 1 x Needle Bearing 1 x Hose 2 x Oil Seals