SureFlo Performance Sending Unit for 2001-2004 LB7 Duramax Fleece Performance

Feed an external lift pump properly

A frame-mounted aftermarket lift pump normally needs a draw straw or a sump drilled into the tank, and both can starve the pump and pull air below about a quarter tank. The SureFlo drops into the stock sending unit location instead, with factory-style quick disconnects for the stock lines and no cutting or drilling.

It draws from and returns to a bucket at its base, with one-way check valves that let fuel in at low levels, so the pump sees fuel instead of air. It's also a good fix for a failed level sender on trucks that never had an in-tank pump, or for running custom lines straight to the tank.

Who it's for

Owners of 2001-2004 LB7 Duramax pickups running an external lift pump or needing a new sender.

Key specs (per Fleece)

What's included

• SureFlo sending unit with new level electronics and float
• New O-ring or flange seal

Fitment notes

• Fits 2001-2004 Chevrolet Silverado / GMC Sierra 2500/3500 6.6L LB7 Duramax (per Fleece).
• Has no pump of its own; for an in-tank pump, see the Fleece PowerFlo.
• Fleece has tested it with AirDog pumps up to 220 GPH and FASS pumps up to 200 GPH.
• Pickup trucks only; on cab and chassis trucks, check your pump part number against Fleece's chart.
• Not compatible with S&B aftermarket tanks.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.