Three Way Catalyst: Removal and Installation [VQ40DE]: Installation

Installation is in the reverse order of removal.

Air fuel ratio sensor : 50.0 N.m (5.1 kg-m, 37 ft-lb)

CAUTION:

Do not over tighten air fuel ratio sensor 1. Doing so may cause damage to air fuel ratio sensor 1, resulting in the "MIL" coming on.
Before installing a new air fuel ratio sensor 1, clean exhaust system threads using oxygen sensor thread cleaner and apply anti-seize lubricant.
Oxygen sensor thread cleaner: - (J-43897-12)

Oxygen sensor thread cleaner: - (J-43897 18)