46mm piston kit for stihl ms290 ms310 ms390 chainsaw 1Applicable Model: Cylinder piston kit is specially designed for Stihl MS390 MS290 MS310 029 039 Chainsaw, perfect fitness to meet your demands. 2Reference Oem Number: The part number for reference is 1127 020 1216, please confirm whether it is consistent with the OE you need. 3Advantages: With low noise, low expansion coefficient, improved heat dissipation, strong power and low fuel consumption and lower friction surface. 4Ideal Replacement: Cylinder head piston kit is precisely engineered and produced on the base of standards, directly replace the old or damaged one. 5High Strength: Constructed of high strength die casting aluminum, cylinder piston assembly is anti rust, wearproof, sturdy and durable.