Cummins Fuel Injector 3939401 4089727 Compatible for Cummins Engine 4BT3.9 6BT B4.5

Applications:
Fit For Cummins Engine: 4B3.9, 6C8.3, B3.3, 4BT3.9, 6BT, B4.5, ISB6.7, QSB6.7, ISB6.7 CM2350 B101, QSB6.7 CM2250 Fuel Injector 3939401 4089727 for Cummins Engine 4B3.9 6C8.3 B3.3 B4.5 ISB6.7 QSB6.7 4BT3.9 6BT Condition: New Aftermarket Part Note: We recommend replacing the entire set of fuel injectors to ensure the engine's optimal performance. Due to differences in oil output and atomization concentration between genuine and aftermarket parts, they should not be mixed. Replacing the entire set of injectors helps avoid potential issues. Replace Part Number: 3939401, 4089727, 4089727nx, 4089727rx