Product Description
Cummins 3945707 steel fuel return line for compatible 5.9L ISB 24-valve diesel engines, including 1998.5–2002 Dodge Ram 2500 and 3500 trucks equipped with the VP44 injection pump.
Designed to route excess fuel from the VP44 injection pump to the fuel return tee fitting, helping maintain proper fuel circulation within the engine's fuel system.
This formed steel tube provides a direct replacement for compatible original equipment fuel return lines. The original Cummins replacement assembly includes a grommet seal and retaining nut. Banjo bolt sealing washers and support clamps are separate components.
Verify engine model, fuel injection system, tube routing, connection fittings, and original equipment part number before ordering. Confirm included hardware before installation.