Product Description
Cummins Fuel Injector Supply Line 3685809 is designed to deliver fuel to the number 4 or number 5 injector on compatible Cummins ISX15 diesel engines.
This replacement fuel supply tube provides a connection within the engine's fuel injection system, helping maintain proper fuel delivery and reliable engine operation.
Configured for cylinders 4 and 5, this line is suitable for replacement during injector servicing, fuel system maintenance, or repairs involving damaged or leaking fuel lines.
Used in select Cummins ISX15 engine configurations. This part is sold individually and is not a complete set of injector lines.
Verify compatibility with your engine serial number and existing fuel line before ordering.