Features: 1.Part Number: According to the original factory specifications, 56mm cylinder piston kit reference OE number is 11220201209. 2.Applicable Model: Cylinder piston kit fit for Stihl 066 MS660 chainsaws, please confirm the model carefully to ensure precise fit. 3.Features: Less abrasion, low noise and long service life as well as low expansion coefficient and good heat dissipation, strong power and low fuel consumption. 4.Durable Material: Made of steel and iron materials, durable, not easy to wear, high hardness, not easy to break, rust resistance, long service life. 5.Complete Repair Parts: Piston cylinder kit includes 7 parts: 1pc piston pin, 2pcs piston ring, 2pcs snap ring, 1pc cylinder, 1pc piston.Specification:Item Type: Piston Cylinder KitMaterial: Steel, IronCaliber: Approx. 56mm/2.2inOE: 11220201209Fitment: Fit for Stihl 066 MS660 ChainsawsPackageList:1 x Piston Pin2 x Piston Ring2 x Snap Ring1 x Cylinder1 x PistonNote:1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!