Cummins ISB cylinder head coolant port kit

Protect the coolant port holes including the thermostat and coolant temperature sensor port, this kit also includes  the fuel port on the back of the cylinder head of fuel return (there is the letter "F" printed on the fuel port". This comes with a port holder tool that attaches to the top of the fuel port kit when bought separately

Using a pocket screw driver or type of pick might be helpful to remove plates once installed. There is tight clearances to optimize the cleanest environment for your engine. Plates are resistant to brake clean but recommend using soapy water and rags to clean after use.