In most cases, repairing the leak is as simple as removing the filter assembly from the engine and replacing the drain valve o-rings, but as long as you have it off, you should replace the other three o-rings, and since the fuel lines were disconnected you should replace the fuel line grommets too. This kit include everything you need.
Cross Reference:
APP3118, 0007, AP0007, F81Z9C065AA, F81Z-9C065-AA
