Subaru LEGACY 2004 Service Manual page 570

Fuel Filter
FUEL INJECTION (FUEL SYSTEMS)
28.Fuel Filter
A: SPECIFICATION
Fuel filter forms a unit with fuel pump.
Refer to Fuel Pump for removal and installation.
<Ref. to FU(H4SO 2.5)-49, REMOVAL, Fuel
Pump.>
<Ref. to FU(H4SO 2.5)-49, INSTALLATION, Fuel
Pump.>
FU(H4SO 2.5)-53