Direct Replacement: Replace part numbers 4918991 Fitment: Fit for Cummins ISX12 and ISX15 with single overhead cam High Quality: Machined from heavy duty steel with excellent mechanical and physical properties, this Installer Tool is good in corrosion resistance and durability Application: Used for installation and removal of front crankshaft seal and wear sleeve without damaging the seal, it credibly prevents the seal from leaking Features: Simple to use, impossible to mess up, and well built. .