Fleece Performance 01-04 GM Silverado/Sierra 2500 6.6L-V8 Duramax Truck PowerFlo In-tank Lift Pump

The Fleece Performance PowerFlo In-tank Lift Pump for 2001-2004 GM Silverado and Sierra 2500 with 6.6L V8 Duramax engines is a high-performance OEM replacement designed to enhance fuel delivery. Constructed to retain the factory fuel lines, it offers a straightforward installation process that takes less than half the time of other high-flow lift pumps. Featuring new sending unit electronics and a fuel level float, it ensures accurate fuel gauge readings. Its active fill bucket design eliminates the need for tank sumps, draw straws, additional air filtration, and common issues associated with higher flow pumps, providing seamless integration with the vehicle’s existing fuel system. The pump outlet and return are threaded to accept a -8 O-ring fitting, allowing for aftermarket fuel line or filter customization if desired. It replaces GM OE part AC Delco 89060639 and is built to meet OEM quality standards for reliable performance.

This pump is intended for use on pickup-style trucks only, with compatibility verified via cross-reference P/Ns for cab & chassis models. It is ideal for applications requiring increased fuel flow for towing, performance upgrades, or enhanced reliability in daily driving. The installation is a direct OEM replacement, ensuring a secure fit and straightforward upgrade process. The kit includes the pump assembly with active fill bucket and electronics, designed to work seamlessly with the factory fuel system. Suitable for diesel-powered trucks, this pump provides a durable, high-quality solution for maintaining optimal fuel delivery under demanding conditions.