ГАЙКА Caterpillar 1397816

The Fuel Injection Nozzle Pipe Nut fastens the pipe to the fuel injector, forming a sealed and stable connection that manages excess fuel return from the injector back to the fuel system. This nut holds the pipe in place, preventing fuel seepage, vibration loosening, and disconnection during engine operation. Maintaining a stable return line connection helps regulate consistent injector function and prevents loss of fuel through leaks.Attributes:• Maintains alignment of the pipe to prevent stress fractures or kinks.• Ensures uninterrupted leak-off function under engine heat and motion.• Holds the pipe in position during engine vibrations and load shifts.Applications: The Fuel Injection Nozzle Pipe Nut is fitted at the leak-off port of the injector, where it connects and secures the leak-off pipe used to return excess fuel to the fuel system.