Specification Brand : BMotorParts BulletPoint1 : 【Premium Quality】Chainsaw crankshaft oil seal set is made of high-quality rubber material, which seal function is good, long service life. It has certain adaptability to the vibration of the machine and the eccentricity of the spindle. BulletPoint2 : 【Good Compatibility】Hicello 10 Pcs oil seals are widely compatible with STIHL 017, 018, 021, 023, 025, MS170, MS180, MS210, MS230, MS250 Chainsaw. Replace Part # For 9639 003 1585, 9639 003 1584, 9638 003 1581. BulletPoint3 : 【What You Get】We offer 10PCS crank oil seals. If you consider the price and quality, the oil seals have a high-cost performance. With good heat resistance, wear resistance, and resistance to all kinds of lubricating oil, grease, oil, and gas mixture. BulletPoint4 : 【Product Size】Hicello chainsaw crank oil seal replacement for Stihl. I.D: 14mm/0.55", O.D: 25mm/0.98", Thickness: 5mm/0.2". Compare the size of your old parts, but confirm that this size is what you need, if you have any questions, please feel free to contact us. BulletPoint5 : 【Easy to Install】Oil seal structure is simple, and easy to install, please ensure that the shaft or cavity must not be "damaged" before installation. When installing the oil seal, you can apply some oil on the journal, and gently press the oil seal into it with appropriate special tools to prevent the deformation of the oil seal. CompatibleWithVehicleType : Tractor ExternallyAssignedProductIdentifier : 4207384433899 ExternallyAssignedProductIdentifier1 : 0653334416667 ExternallyAssignedProductIdentifier2 : 653334416667 ItemName : Carburetor Carb Assy. For Troy Bilt Horse XP Lawn Tractor Model# 13YX79KT011 ItemPackageDimensions_Height : 6.1 centimeters ItemPackageDimensions_Length : 1.8 centimeters ItemPackageDimensions_Width : 5.4 centimeters ItemTypeKeyword : chain-saw-replacement-parts Manufacturer : Hicello Material : Rubber ModelNumber : SZ070050052076RK PartNumber : SZ070050052076RK ProductDescription : Packaging List: 10 x Oil Seals