Specification Brand : GardenP+ BulletPoint1 : Compatible with Stihl MS391 BulletPoint2 : Replaces OEM 1140-020-1204 BulletPoint3 : The Nikasil-coated cylinder is extremely durable; this material prevents the steel piston rings from directly contacting the aluminum cylinder housing, thus significantly extending the lifetime of the cylinder. BulletPoint4 : Good Quality & Price: GardenP+ manufactures the same or better quality than OEM standards. BulletPoint5 : 100% warranty within one month. Return for refund if not completely satisfied due to defects, damage, or dissatisfaction. Color : Gray ItemName : GardenP+ Nikasil 49mm Cylinder with Piston, Cylinder Piston Kit Compatible with Stihl MS391 Replaces OEM 1140-020-1204 11400201204 Chainsaw Replacement Parts ItemPackageDimensions_Height : 13.7 centimeters ItemPackageDimensions_Length : 11.7 centimeters ItemPackageDimensions_Width : 13.3 centimeters ItemTypeKeyword : chain-saw-replacement-parts ItemTypeName : Nikasil Cylinder with Piston Manufacturer : GardenP+ ModelName : Nikasil Cylinder with Piston ModelNumber : 1140-020-1204 NumberOfBoxes : 1 PartNumber : 1140-020-1204 PowerSourceType : fuel_powered ProductDescription : GardenP+ Replacement Parts 1140-020-1204 Cylinder with Piston is compatible with Stihl MS391. Replaces OEM Part Number: 1140-020-1204. Nikasil-coated cylinder, extremely durable. This material prevents the steel piston rings from directly contacting the aluminum cylinder housing, thus extending the lifetime of the cylinder significantly. It is better than chrome-coated cylinders. Every product from GardenP+ comes with a 30-day free return, and refund warranty if you aren't completely satisfied in case of defection, damage, non-satisfaction, etc. Please feel free to contact us if you have any questions regarding the model and compatibility since we are your reliable partner! Please note any brand name mentioned is only for the purpose of demonstrating compatibility. SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1