Fleece Performance SureFlo Performance Sending Unit for 2001-2004 GM Silverado/Sierra 2500/3500 (6.6L) - FPE-SF-GM-0104

Fits select 2001-2004 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 trucks (6.6L LB7 Duramax).

The Fleece Performance SureFlo Performance Sending Unit is engineered to solve the common "1/4 tank" fuel starvation issues associated with high-flow aftermarket lift pumps. Unlike traditional draw straws or tank sumps that require drilling or cutting, the SureFlo drops directly into the factory sending unit location for a clean, bolt-in installation.

This unit utilizes a specialized bucket assembly that draws fuel from and returns fuel to the base of the assembly. This design ensures your lift pump always has a steady supply of fuel even at low tank levels, preventing pump cavitation and air intrusion. Integrated one-way check valves allow fuel to enter the bucket easily while maintaining a reservoir around the pickup. The assembly features a heavy-duty billet aluminum cap and includes new fuel level electronics for accurate gauge operation.

• Direct replacement for GM OE Part Number 89060639 (AC Delco)
• Eliminates 1/4 tank fuel starvation and pump cavitation
• Heavy-duty billet aluminum cap with universal -8 AN ports for custom plumbing
• Compatible with factory quick-disconnect fuel lines
• Includes new fuel level electronics and fuel float
• OEM-style fitment requires no tank cutting or drilling
• Includes new O-ring or flange seal
• Manufacturer Part Number: FPE-SF-GM-0104

Note: Designed for pickup style trucks only. For cab and chassis applications, verify the original pump part number against the OE cross-reference before installation.