FX45 AWD V8-4.5L (VK45DE) (2006)
Install exhaust manifold gasket with its directional protrusion set upward. Refer to the figure of components.
Exhaust Manifold
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Install exhaust manifold and tighten mounting nuts in numerical order as shown in the figure.
A Left bank
B Right bank
<-: Engine front
NOTE: Tighten mounting nuts No. 1 to 4 in two steps. The numerical order No. 9 to 12 shown second steps.
Air Fuel Ratio Sensor and Heated Oxygen Sensor
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Install air fuel ratio sensors and heated oxygen sensors in the original position.
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Install referring the following if the installation positions cannot be identified.
Glass tube color
Air fuel ratio sensor 1: Black
Heated oxygen sensor 2: White
CAUTION:
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Before installing a new air fuel ratio sensor and heated oxygen sensor, clean exhaust system threads using oxygen sensor thread cleaner
(commercial service tool: J-43897-18 or J-43897-12), and apply anti-seize lubricant (commercial service tool).
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Do not over torque air fuel ratio sensor and heated oxygen sensor. Doing so may cause damage to the heated oxygen sensor, resulting in MIL
coming on.