3917998 3917999 4988749 Fuel Lift Pump for Cummins B Series C Series 1106N1010

Product Overview

This fuel lift pump delivers diesel fuel from the tank to the injection system on CUMMINS B Series, C Series, and 1106N1‑010 engines. It ensures consistent fuel flow and pressure, preventing air ingress and fuel starvation during heavy load operation.

Key Features & Performance

• Diaphragm‑style mechanical pump provides reliable fuel transfer without electrical wiring
• Interchangeable with OEM numbers 3917998, 3917999, and 4988749
• Built with corrosion‑resistant materials for long service in diesel environments
• Includes inlet and outlet ports that match factory fuel line connections
• Pre‑tested for leak‑free performance before packaging

Fitment & Compatibility

• CUMMINS B Series engines (3.9L, 5.9L)
• CUMMINS C Series engines (8.3L)
• CUMMINS 1106N1‑010 engine

Common Uses

• Replacing worn or leaking lift pumps on CUMMINS diesel engines in trucks, buses, and generators
• Restoring fuel pressure in agricultural tractors and construction equipment
• Servicing marine vessels with CUMMINS propulsion engines

Technical Specifications

• Part Number(s): 3917998, 3917999, 4988749
• Type: Mechanical diaphragm fuel lift pump
• Fuel: Diesel

Frequently Asked Questions

Q: Does this pump require any electrical connection? A: No, it is a mechanical diaphragm pump driven by the engine’s camshaft; no wiring is needed.

Q: Can this fuel lift pump be used on a CUMMINS 5.9L 12‑valve engine? A: Yes, it is compatible with CUMMINS B Series 5.9L engines, including 12‑valve models, as long as the mounting pattern matches.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.