FITMENT: Work on Cummins Signature, ISX & QSX，ISX12 and ISX15 engine. It will fit the newest Cummins seal perfectly. BENEFITS: Specifically design to install and remove the crankshaft rear seal & wear sleeve, saving time and reducing risk of crankshaft seal surface damage during removal. DIRECT REPLACEMENT: This is a high-quality aftermarket alternative to OEM #3164780 (seal/sleeve kit PN 4965569). SUPERIOR MATERIAL: Made from high standard carbon steel which can withstand corrosion, rust and impact, its heavy duty construction ensures an unparalleled long lifespan. .