Intake Side

Install the oil flow control solenoid valve.
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)
Apply liquid gasket to the two bolts securing oil return cover.
Liquid gasket:

THREE BOND 1324 (Part No. 004403042) or equivalent
Attach the oil return cover and gasket.
Tightening torque:

9 N.m (0.9 kgf-m, 6.6 ft-lb)

NOTE: Use a new gasket.

Fig 1: Identifying Oil Flow Control Solenoid Valve And Front Camshaft Cap
Courtesy of SUBARU OF AMERICA, INC.