Fuel Sending Unit (for use with Aftermarket Lift Pumps) for 2013-18, 2021-2024 Dodge/Ram 2500/3500 6.7L Cummins is an S&B fuel sending unit intended for the fuel tank and vehicle configuration listed in the product title. It is used to support fuel level reporting on compatible OEM or S&B replacement tank setups, including certain aftermarket lift-pump configurations where noted. Because bed length, tank type, and pump setup affect compatibility, verify the SKU against the current S&B application notes before ordering. Original description written for S&B part 86-3001 without copying manufacturer or reseller text.