Fleece Performance 11-24 Dodge Ram 4500/5500 Sureflo Sending Unit (52 Gal)SureFlo performance sending units are a great alternative for trucks with aftermarket frame mounted lift pumps looking to replace a malfunctioning fuel level sender or combine with a new frame mounted lift pump for a clean install without the pitfalls of a sump or draw straw. 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.