Fleece FPE-SF-CUMM-1121 SureFlo Performance Sending Unit | 2011-2024 RAM 2500/3500 6.7L Cummins

Features

• OEM-style fitment with no need to cut or drill your tank

• Compatible with 2011–2024 RAM 2500/3500 6.7L Cummins trucks

• Integrates with externally mounted aftermarket lift pumps (up to 200 GPH)

• Draws and returns fuel to the bucket assembly to prevent air draw and cavitation

• Includes new fuel level electronics and float for accurate gauge readings

• Heavy-duty billet aluminum top cap for durability

• Equipped with -8 AN universal ports for custom fuel plumbing

• Integrated one-way check valves for fuel flow at low tank levels

• Includes new O-ring or flange seal

• Comes with 8 to 3/4-16 straight male fitting with O-ring

Performance Benefits

The Fleece SureFlo Performance Sending Unit solves a key issue faced by Cummins owners running external aftermarket fuel pumps: air entering the fuel system due to tank draw straws or sumps. These setups often lead to fuel starvation at low levels, causing pump cavitation and potential damage. The SureFlo replaces the stock sending unit and eliminates these issues by pulling and returning fuel directly to the bucket assembly at the tank’s base — keeping the system primed and air-free, even when fuel levels are low.

Practical Application

Designed for RAM owners upgrading to an external lift pump (like FASS or AirDog), the SureFlo unit offers a clean, factory-style solution with no drilling or tank modifications. Its quick-disconnects link up seamlessly with stock fuel lines, while its universal AN fittings allow for professional-level custom plumbing. It also functions as a reliable replacement for trucks that originally lacked in-tank pumps but now require a high-performance solution.

Note: Not compatible with aftermarket lift pumps rated over 200 GPH. For 2020+ trucks with 50-gallon tanks, use part #FPE-SF-CUMM-2024-50.

Fitment:

2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 RAM 2500/3500 6.7L Cummins

Warranty:

Limited manufacturer’s warranty (see manufacturer for details)

Fitment Notes:

• Will not fit trucks equipped with OEM 50-gallon tanks (2020+ models); use FPE-SF-CUMM-2024-50 instead

• Designed for use with external lift pumps up to 200 GPH

• Not for trucks with factory in-tank pumps unless retrofitting a custom system