Parts Number OEM Reference : Cummins# 4983588,3966840, 3948072, 3942723, 5449240.5449240
The ESN remains the most important check,
because the same engine model can be fitted with different
parts depending on the year of manufacture or the CPL.
Front Crankshaft Oil Seal Kit Cummins Engine ISL – Engine QSL / QSL 9
The kit is fitted to the front of the crankshaft, at the front gear housing/front cover. Its function is to prevent engine oil from leaking around the crankshaft whilst it is rotating. It typically comprises a technical elastomer seal with a metal reinforcement and a metal support/cover.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL, QSL / QSL 9 engines.
Always check the ESN and CPL before sale, as there may be variations within the ISC/QSC/ISL/QSL families depending on configuration, year and front gear housing.