Fuel Lift Pump 3917998 3917999 4988749 for CUMMINS B Series C Series 1106N1‑010

Fuel Lift Pump 3917998 3917999 4988749 for Cummins

This aftermarket fuel lift pump replaces OEM part numbers 3917998, 3917999, and 4988749 (referenced as 1106N1-010) and delivers reliable fuel transfer for Cummins B Series and C Series engines.

Overview

This fuel lift pump is a direct replacement for Cummins B Series and C Series diesel engines, ensuring a steady flow of fuel from the tank to the injection system. It uses a diaphragm or piston mechanism to maintain proper fuel pressure and prevent cavitation. Designed for tractors, trucks, generators, and industrial equipment, this fuel lift pump restores performance and fuel system reliability.

Built For Performance

• Die-cast housing for corrosion resistance and structural integrity
• Precision-machined fuel passages for consistent flow rates
• Built-in check valves to prevent backflow and maintain prime
• Compatible with diesel, biodiesel, and low-sulfur fuel blends
• Easy bolt-on installation with pre-installed gasket
• Tested to meet or exceed OEM pressure specifications

Fits These Machines

• for Cummins B Series
• for Cummins C Series

Specs At A Glance

Good To Know

Q: Can this fuel lift pump be used on mechanically injected Cummins engines? A: Yes, this pump is designed for mechanical fuel systems on B and C Series engines. Verify your pump mount pattern and fuel line connections for a proper fit.

Q: Do I need to prime the system after installing the pump? A: Priming is often required to remove air from the fuel lines. Follow the engine manufacturer's bleed procedure to avoid starting difficulties.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.