Installation [12/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL STUD BOLT

HINT:
If a stud bolt is deformed or the threads are damaged, replace it.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an E8 "TORX" socket wrench, install the 2 stud bolts (A) to the exhaust manifold assembly RH.
Torque: 19.5 N*m (199 kgf*cm, 14 ft.*lbf)
Using an E6 "TORX" socket wrench, install the 2 stud bolts (B) to the exhaust manifold assembly RH.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)

INSTALL EXHAUST MANIFOLD TO HEAD GASKET

INSTALL EXHAUST MANIFOLD ASSEMBLY RH

Fig 1: Exhaust Manifold Assembly RH With Tightening Sequence

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Bolt

Nut

Temporarily install the exhaust manifold assembly RH to the cylinder head sub-assembly RH with the 4 nuts.
Temporarily install the manifold stay to the exhaust manifold assembly RH and rear engine mounting bracket with the bolt and nut.
Tighten the 4 nuts in the order shown in the illustration.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)

INSTALL MANIFOLD STAY

Fig 2: Manifold Stay With Tightening Sequence

Bolt

Nut

Tighten the bolt and nut in the order shown in the illustration.
For Nut

Torque: 35 N*m (357 kgf*cm, 26 ft.*lbf)

For Bolt

Torque: 34 N*m (347 kgf*cm, 25 ft.*lbf)

INSTALL AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

Refer to PROCEDURE - Step 1
INSTALL EGR VALVE ASSEMBLY
Refer to INSTALLATION [12/2023 - ]
INSTALL ENGINE ASSEMBLY WITH TRANSAXLE
Refer to INSTALLATION [12/2023 - ]