Oni Tools Crankshaft Front & Rear Seal Remover & Installer set for Cummins ISX ISX12 ISX15 & QSX. This is a heavy duty aftermarket replacement for OEM part numbers 4918991, 3164780 and 3162994.Designed to remove and install the crank seals and wear ring/sleeve for Cummins diesel engines properly. This set replaces multiple seals including 4965569 and will fit the newest Cummins seals perfectly. Application include Cummins Signature, ISX, QSX, ISX12 and ISX15 Diesel Truck Engine. Our tool ONI221T fits Cummins ISX12 & ISX15 engine with single overhead cam. Use ONI178T alternative to 3162992 for double overhead cam engines. Oni Tools ensures quality products and stands behind top of the line manufacturing. We guarantee our products to last and offer support along the way.