The Cummins 4975670 Fuel Supply Tube is a replacement fuel line for the Cummins QST30 engine, identified by part number 4975670. It carries fuel within the engine's fuel system, providing the correct routing between the fuel supply source and the engine’s delivery points in QST30 configurations. This tube is used during maintenance or repair of QST30 powertrains to restore proper fuel delivery and compatibility with Cummins hardware.
