Fuel Sending Unit (For use with aftermarket lift pumps) for S&B Replacement Fuel Tanks for 2001-2004 GM Duramax 6.6L LB7

Aftermarket lift pumps provide more fuel to your diesel engine but face issues at a 1/4 tank fuel level. The S&B Sending Unit allows you to drive to empty with your pump. Completely plug and play, with no need to modify your OEM tank or sending unit.