Features: Great Compatibility：Fit for Cummins ISX12 and ISX15 with single overhead cam. Directly replace part numbers 4918991. Function：Used for installation and removal of front crankshaft seal and wear sleeve without damaging the seal, it credibly prevents the seal from leaking. Superior Quality：Constructed with 4140 hardened steel with black or silver finish, which is great strength, rust-resistance and durable to use. Nice Design：Use to remove and install front crankshaft seal and wear sleeve without damaging the seal and leakage. Make sure of the correct installation depth of the crankshaft seal. .