350Z V6-3.5L (VQ35) (2003)
Installation of Exhaust Manifold
If stud bolts were removed, install them and tighten to the torque specified.
12.7 - 16.7 Nm (1.3 - 1.7 kgf-cm, 10 - 12 ft. lbs.)
Install exhaust manifold in the numerical order as shown in the figure.
Tighten nuts No. 1 and No. 2 in two steps. The numerical order No. 7 and No. 8 shows second step.
Installation of Heated Oxygen Sensor
CAUTION: When using heated oxygen sensor wrench (KV10114400), tighten to the middle of specified torque because length of tool may induce
slight indication increase. Do not tighten to the maximum spec if fed torque.
Before installing a new heated oxygen sensor, clean exhaust system threads using heated oxygen sensor thread cleaner tool, J-43897-18 or J-43897-12,
and apply anti-seize lubricant.
Do not over torque the heated oxygen sensor. Doing so may cause damage to the heated oxygen sensor, resulting in the MIL coming on.