APDTY 015921 Gear Driven Mechanical Vacuum Pump Compatible With 1994-2002 Dodge Ram 2500 3500 Pickup w/Cummins 5.9L Diesel Engine (Replaces 3937193RX, 4746706, 4874365, 5019734AA, R5019734AA) Brand New Gear Driven Mechanical Vacuum Pump Compatible With 1994-2002 Dodge Ram 2500 3500 Pickup With Cummins 5.9L Diesel Commonly Needed To Restore Power Brake Booster Operation Replaces 3937193RX, 4746706, 4874365, 5019734AA, R5019734AA