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

The Fleece Performance SureFlo Performance Sending Unit is a high-quality upgrade designed for 2001-2004 GM 2500 and 3500 trucks equipped with the 6.6L LB7 Duramax engine. It is engineered to work seamlessly with aftermarket lift pumps, replacing the stock sending unit without the need for tank modifications. Constructed with a heavy-duty billet aluminum cap and featuring OEM-style quick disconnects, this unit ensures a clean, professional installation that eliminates common issues such as cavitation and 1/4 tank fuel problems. It draws fuel efficiently from the base bucket assembly, incorporating one-way check valves to maintain consistent fuel flow at lower levels, and includes new electronics and a fuel float for accurate level readings. The universal -8 AN ports facilitate custom plumbing setups, making it a reliable solution for performance and durability.

Designed specifically for pickup trucks from 2001 to 2004, this SureFlo sending unit fits directly into the stock location, requiring no cutting or drilling of the tank. It is ideal for use with aftermarket fuel systems, custom fuel line configurations, or repairs of malfunctioning in-tank fuel level sensors. Compatibility is confirmed for trucks with the specified OE part number 89060639, and it is suitable for applications demanding consistent fuel delivery and improved fuel system reliability. This product provides a straightforward, bolt-on upgrade for enthusiasts seeking enhanced fuel system performance and longevity in street or performance driving scenarios.