The 5291050 Lubricating Oil Pump ensures optimal performance and longevity for Cummins Engine ISB, QSB4.5, QSB6.7, and QSB7 models. Compatible with part numbers 3971544, 3973398, 3976089, 4897481, 4939588, 4983496, and 4988801.
Supersedes:3971544 3973398 3976089 4897481 4939588 4983496 4988801
