1、Applicable Model: Cylinder piston gasket kit is designed for STIHL MS440 044 Chainsaw. Please confirm whether your model is applicable before buying. 2、Reference OE: 1128 020 1227 is the replacing reference part numbers. Please double check the part number of your item to ensure perfect fit. 3、Characteristic: Cylinder piston kit has low noise, small expansion coefficient, good heat dissipation, strong power, low fuel consumption, and small friction surface. 4、Reliable Material: Die cast aluminum material is selected, cylinder piston kit is sturdy, safe and durable, not easy to break, has long service life. 5、Ideal Replacement: Professional manufacturing, perfect fit to meet your needs, allowing you to directly replace the original damaged one.