Fleece Performance 01-04 GM 2500/3500 6.6L LB7 Duramax SureFlo Performance Sending Unit

PROBLEM: If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to install a draw straw or drill your fuel tank to accommodate a sump. Each of these has some pretty significant drawbacks including the 1/4 tank issues that result in cavitation of the pump when you draw air into the fuel system. SOLUTION: SureFlo performance sending units are designed to work with aftermarket lift pumps and fits directly into your stock sending unit location. It features factory style quick disconnects to adapt your stock fuel lines at the tank, giving you the cleanest installation available, and requiring no cutting or drilling of the tank. SureFlo works by drawing fuel from, and returning fuel to, the bucket assembly at the base of the unit. This ensures you are always drawing fuel into your pump and not drawing air into the fuel system as well as eliminates the dreaded 1/4 tank problems. The SureFlo bucket also incorporates one way check valves to allow fuel to easily flow in at lower levels. Our SureFlo performance sending units are also a great alternative for trucks originally equipped without an in tank pump needing to repair a malfunctioning level sender or if you are simply looking to run your own custom fuel lines directly to the tank. Features OEM style fitment that requires no tank cutting or drilling New fuel level electronics and fuel float Heavy duty billet aluminum cap Universal -8 AN ports for professionally plumbing a custom fuel setup New O-ring or flange seal CROSS-REFERENCE Year Replaces GM OE Part Number 2001-2004AC Delco 89060639 APPLICATION NOTES For use on pickup style trucks only - for cab & chassis verify your pump P/N to the cross-reference table.

• Universal -8 AN ports for professionally plumbing a custom fuel setup
• OEM style fitment that requires no tank cutting or drilling
• New fuel level electronics and fuel float
• Heavy duty billet aluminum cap
• New O-ring or flange seal

The Fleece Performance SureFlo Performance Sending Unit is designed specifically for 2001-2004 GM 2500 and 3500 trucks equipped with the 6.6L LB7 Duramax engine. This high-quality replacement offers a seamless upgrade over stock components, providing reliable fuel delivery and improved system performance. Crafted with OEM-style fitment, it installs directly into the stock fuel tank without the need for cutting or drilling, ensuring a clean and professional appearance. The unit features a heavy-duty billet aluminum cap and new fuel level electronics with a float, delivering accurate fuel readings and durability under demanding conditions.

Designed to work with aftermarket lift pumps mounted externally of the fuel tank, the SureFlo unit eliminates common issues such as cavitation and the dreaded quarter-tank fuel problems. It achieves this by drawing fuel from and returning fuel to the bucket assembly at the base of the unit, maintaining consistent fuel flow and preventing air from entering the system. The inclusion of one-way check valves within the bucket ensures fuel flows smoothly even at lower levels, enhancing overall system reliability. The unit's universal -8 AN ports facilitate professional-grade plumbing for custom fuel setups, making it an ideal choice for modified trucks or those requiring a repair or upgrade of the fuel system.

Constructed with durability in mind, the SureFlo features a new O-ring or flange seal for a secure fit and long-lasting performance. It replaces GM OE part number 89060639 and is suitable for use on pickup-style trucks, with verification needed for cab & chassis applications. This product is a practical, high-performance solution that combines OEM compatibility with the flexibility needed for custom fuel system configurations, ensuring your vehicle maintains optimal fuel delivery without invasive modifications.

Features:

• OEM style fitment that requires no tank cutting or drilling

• Heavy-duty billet aluminum cap for durability

• New fuel level electronics and fuel float for accurate readings

• Universal -8 AN ports for professional plumbing of custom fuel setups

• New O-ring or flange seal for secure installation

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1