Main Fuel Pump Module
The main fuel pump module assembly contains the following components:
- An internal fuel filter
- A separate fuel pick-up, or inlet filter
- A fuel pressure regulator
- Fuel supply fitting (1)
- An electric fuel pump (2)
- A lock-ring to retain pump module to tank
- A soft gasket between tank flange and module
- A fuel gauge sending unit (fuel level sensor) (3)
- Auxiliary fuel pump module supply line connection (4)
If the electrical fuel pump, primary inlet fuel filter, internal fuel filter, or fuel pressure regulator require service, the fuel pump module must be replaced as an assembly.