Fuel Injector 3977689 for Cummins Engine 4B3.9 6B5.9 B5.9
Condition: New aftermarket part
Note: We recommend replacing the entire set of fuel injectors to ensure optimum engine performance. Due to differences in oil production and atomization concentration between original and aftermarket parts, they should not be mixed. Replacing the entire set of injectors helps to avoid potential problems.
Fuel Injector Nozzle Replace Part Number: SDLLA155M37670
Replace part number:3977689
Applications:
Fits for Cummins Engine: 4B3.9, B5.9, 6B5.9, B4.5, ISD4.5, ISB6.7, ISF3.8, B4.5s