Features: 1. Application of Front Crankshaft Seal Remover and Installer Kit: Fits for Cummins Signature, ISX & QSX Diesel Truck Engine. NOTICE: Not work on ISX12 or ISX15, for those you will need 4918991. Alternative to OEM 3162992. 2. Function: Used to remove and install front crankshaft seal without damage it while allows the seal to be properly positioned on the crank nose to the front cover. Works on the dual overhead cam engines. 3. Application of Rear Crankshaft Seal Remover and Installer Kit: Fits for Cummins Signature, ISX & QSX, ISX12 and ISX15 engine. It will fit the newest Cummins seal perfectly. Alternative to OEM #3164780 (seal/sleeve kit PN 4965569). .