Product Overview
4089342 3934486 3970548 ISL Rear Crankshaft Oil Seal. Product type: Rear Crankshaft Oil Seal. Part number(s): 4089342, 3934486, 3970548. Engine/model: ISL, QSL, QSC, 6BT, 6CT. Application notes: rear crankshaft oil seal for Cummins ISL, QSL, QSC, 6BT, 6CT engine applications. Please verify final fitment by part number, engine serial number, and application before publishing or ordering.












