This is an aftermarket replacement Please Note That Some Listings Use Stock Images As A Reference For Customers All OEM part numbers and logos are to be used for identification purposes only Specifications: Item ConditionAftermarket Part DescriptionStandard Bore Cylinder KitCompression Ratio13.5:1Cylinder Diameter96mmCylinder Kit TypeStandard BoreDisplacement449ccEngine Type4-CycleKit IncludesCylinderPiston Kit& Top-End Gasket KiNotesUses #23549. Replaces these part numbers: