Function: Fit for Cummins Signature ISX QSX ISX12 ISX15 diesel truck engines. Fit for the newest Cummins seal perfectly! Ued to easily & quickly install and remove the crankshaft rear seal & wear sleeve ring. Help you do the job effortlessly for your rear main seal diesel engine, saves your time and energy. Directly Replacement: This is a high-quality aftermarket alternative to 3164780 and it also replaces 3162994. Replaces multiple seals including 4965569. Specifically designed to install and remove the crankshaft rear seal & wear sleeve, .