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 Kit_x000D_ Material: Steel, Iron_x000D_ Caliber: Approx. 56mm/2.2in_x000D_ OE: 11220201209_x000D_ Fitment: Fit for Stihl 066 MS660 Chainsaws PackageList: 1 x Piston Pin 2 x Piston Ring 2 x Snap Ring 1 x Cylinder 1 x Piston 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!