Hose Assy-Htd Def Ret/Sup (4 X 19 M50-6039-4431900

The Paccar Heated DEF Return and Supply Hose Assembly (M50-6039-4431900) is a specialized fluid transfer hose designed to maintain diesel exhaust fluid temperature during circulation. It facilitates the controlled return and supply of DEF in emission control systems, ensuring fluid integrity under varying thermal conditions. This assembly is engineered for use in heavy-duty vehicle applications requiring heated DEF lines.