Fleece Performance FPE-SF-GM-0104 SureFlo Fuel Sending Unit Duramax - 2001-2004 LB7

The Fleece Performance SureFlo Performance Sending Unit eliminates common fuel delivery problems associated with aftermarket lift pumps on 2001-2004 LB7 Duramax trucks. Designed as a direct replacement for the factory sending unit, it provides a clean, professional solution without requiring tank modifications.

Problem Solved: Traditional external pump installations require draw straws or tank drilling, leading to cavitation and fuel starvation at low fuel levels. The SureFlo system eliminates quarter-tank fuel delivery issues by drawing fuel from and returning it to an integrated bucket assembly at the base of the unit. This ensures consistent fuel supply to your lift pump while preventing air ingestion into the fuel system.

Key Features:

• Direct OEM-style fitment with factory quick-disconnect fittings—no cutting or drilling required
• Integrated bucket assembly with one-way check valves for reliable fuel flow at all tank levels
• Universal -8 AN ports for custom fuel system plumbing
• Heavy-duty billet aluminum cap for durability
• New fuel level electronics and float for accurate gauge readings
• Includes new O-ring or flange seal for proper installation

The SureFlo sending unit is also an excellent solution for trucks that need fuel level sender repair or for custom fuel system installations. It adapts seamlessly to stock fuel lines at the tank while providing professional-grade performance for modified fuel systems.

Specifications:

• Application: 2001-2004 Chevrolet/GMC LB7 Duramax (pickup trucks only)
• Replaces GM/AC Delco Part Number: 89060639
• Fuel ports: -8 AN (male fittings)

Note: Designed for pickup-style trucks only. Cab and chassis applications should verify pump compatibility using the manufacturer's cross-reference guide.