Features: 1.Applicable Model: Cylinder piston kit is specially designed for STIHL MS390 MS290 MS310 029 039 Chainsaw, perfect fitness to meet your demands. 2.Reference OEM Number: The part number for reference is 1127 020 1216, please confirm whether it is consistent with the OE you need. 3.Advantages: With low noise, low expansion coefficient, improved heat dissipation, strong power and low fuel consumption and lower friction surface. 4.Ideal Replacement: Cylinder head piston kit is precisely engineered and produced on the base of standards, directly replace the old or damaged one. 5.High Strength: Constructed of high strength die casting aluminum, cylinder piston assembly is anti rust, wearproof, sturdy and durable. Specification: Item Type: Cylinder Piston Kit_x000D_ Material: Die casting aluminum_x000D_ OEM: 1127 020 1216_x000D_ Cylinder Bore: Approx. 46mm / 1.81in_x000D_ Application: For STIHL MS390 MS290 MS310 029 039 Chainsaw Note: 1. Please double check the part number of your item, matching information is for reference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!