Impreza 2.5 RS Coupe F4-2.5L SOHC (2000)
9) Disconnect heater inlet hose.
10) Disconnect radiator inlet hose from water pipe.
11) Remove bolts which install water pipe on cylinder block.
INSTALLATION
1) Install water pipe on cylinder block.
Tightening torque: 6.4 ± 0.5 Nm (0.65 ± 0.05 kg-m, 4.7 ± 0.4 ft. lbs.)
CAUTION: Use a new O-ring.