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Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

This procedure includes the installation of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

Refer to PRECAUTION [10/2022 - ]



COMPONENTS (INSTALLATION) 

Fig 1: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (1 Of 9)
GTY1075917Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
1 CYLINDER HEAD GASKET 11115 See step  1 - -
2 CYLINDER HEAD SUB-ASSEMBLY 11101 See step  2 - -
3 NO. 2 CAMSHAFT 13512 See step  3 - -
4 CAMSHAFT 13511 See step  4 - -
5 CAMSHAFT BEARING CAP - See step  5 - -
6 VALVE STEM CAP 13716 See step  6 - -
7 VALVE LASH ADJUSTER ASSEMBLY 13750 See step  7 - -
8 NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 13801 See step  8 - -
9 CAMSHAFT HOUSING SUB-ASSEMBLY 11103 See step  9 - -
10 FUEL PUMP LIFTER GUIDE 23477 See step  10 - -
*1 CYLINDER HEAD SET BOLT *2 PLATE WASHER
*3 NO. 1 CAMSHAFT BEARING CAP *4 NO. 2 CAMSHAFT BEARING CAP
*5 NO. 3 CAMSHAFT BEARING CAP *6 NO. 4 CAMSHAFT BEARING CAP
Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N.m (kgf/cm, ft.lbf) N.m (kgf/cm, ft.lbf): Specified torque
• Non-reusable part - -
*T1 1st: 90 (918, 66)
2nd: Turn 90°
3rd: Turn 90°		 - -
Fig 2: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (2 Of 9)
GTY1075284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
11 TIMING CHAIN COVER ASSEMBLY 11310 See step  11 - -
12 CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 13070A See step  12 - -
13 SET NO. 1 CYLINDER TO TDC (COMPRESSION) - See step  13 - -
14 NO. 1 CHAIN VIBRATION DAMPER 13561 - - -
15 CHAIN TENSIONER SLIPPER 13559 - - -
16 NO. 1 CHAIN TENSIONER ASSEMBLY 13540 See step  16 - -
17 CHAIN SUB-ASSEMBLY 13506 See step  17 - -
18 CAMSHAFT TIMING GEAR ASSEMBLY 13050 See step  18 - -
19 OIL PUMP DRIVE CHAIN SUB-ASSEMBLY 13507A See step  19 - -
20 SET NO. 1 CYLINDER TO TDC (COMPRESSION) - See step  20 - -
*1 CHAIN TENSIONER PLATE *2 CHAIN DAMPER SPRING
*3 OIL PUMP DRIVE SPROCKET *4 OIL PUMP DRIVE SHAFT SPROCKET
*5 CAMSHAFT TIMING VALVE ASSEMBLY *6 CRANKSHAFT TIMING SPROCKET
N.m (kgf/cm, ft.lbf): Specified torque Do not apply lubricants to the threaded parts
Fig 3: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (3 Of 9)
GTY1075167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
21 NO. 2 TIMING CHAIN COVER ASSEMBLY 11320B See step  21 - -
22 TIMING CHAIN COVER OIL SEAL 11301C See step  22 - -
23 SPARK PLUG TUBE GASKET 11193 See step  23 - -
24 CYLINDER HEAD COVER SUB-ASSEMBLY 11201 See step  24 - -
25 WATER OUTLET PIPE GASKET 16345 - - -
26 WATER BY-PASS OUTLET 16351 See step  26 - -
27 WATER OUTLET GASKET 16341 - - -
28 WATER OUTLET 16331 See step  28 - -
29 CRANKSHAFT PULLEY ASSEMBLY 13470 See step  29 - -
*1 CRANKSHAFT PULLEY BOLT *2 ENGINE MOUNTING BRACKET RH
*3 CAMSHAFT POSITION SENSOR (for Intake Side) *4 CAMSHAFT POSITION SENSOR (for Exhaust Side)
Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N.m (kgf/cm, ft.lbf) N.m (kgf/cm, ft.lbf): Specified torque
• Non-reusable part MP grease
* Precoated part Do not apply lubricants to the threaded parts
Fig 4: Cylinder Head Gasket Installation Components [08/2023 - ] (4 Of 9)
GTY1066442Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
30 NO. 2 WATER BY-PASS HOSE 16264D - - -
31 NO. 1 WATER BY-PASS HOSE 16261Z - - -
Fig 5: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (5 Of 9)
GTY1075784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
32 CAM TIMING CONTROL MOTOR O-RING 13090E See step  32 - -
33 CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY 13090D See step  33 - -
34 CAM TIMING OIL CONTROL SOLENOID O-RING 15370A See step  34 - -
35 CAM TIMING OIL CONTROL SOLENOID ASSEMBLY 15370 See step  35 - -
36 OIL PRESSURE CONTROL VALVE ASSEMBLY 15250 See step  36 - -
N.m (kgf/cm, ft.lbf): Specified torque • Non-reusable part
* Precoated part - -
Fig 6: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (6 Of 9)
GTY1075114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
37 ENGINE OIL LEVEL DIPSTICK GUIDE 11452 See step  37 - -
38 IGNITION COIL ASSEMBLY 19500 See step  38 - -
*1 ENGINE OIL LEVEL DIPSTICK - -
N.m (kgf/cm, ft.lbf): Specified torque • Non-reusable part
Fig 7: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (7 Of 9)
GTY1075642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
39 FUEL INJECTOR SEAL 23255A See step  39 - -
40 INJECTOR VIBRATION INSULATOR 23291A See step  40 - -
41 C-RING - See step  41 - -
42 NO. 1 FUEL INJECTOR BACK-UP RING 23256 See step  42 - -
43 NO. 3 FUEL INJECTOR BACK-UP RING 23258 See step  43 - -
44 NOZZLE HOLDER CLAMP 23695A - - -
45 DIRECT FUEL INJECTOR ASSEMBLY 23250E See step  45 - -
46 FUEL DELIVERY PIPE 23814B See step  46 - -
47 WIRE HARNESS - - - -
48 PORT FUEL INJECTOR ASSEMBLY 23250F See step  48 - -
49 NO. 5 ENGINE WIRE 82125N - - -
50 INJECTOR VIBRATION INSULATOR 23291 - - -
51 NO. 1 DELIVERY PIPE SPACER 23807V See step  51 - -
52 FUEL DELIVERY PIPE SUB-ASSEMBLY 23807 See step  52 - -
53 NO. 7 WATER BY-PASS HOSE 16295 - - -
Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N.m (kgf/cm, ft.lbf) • Non-reusable part
Fig 8: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (8 Of 9)
GTY1133312Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
54 FUEL PUMP LIFTER ASSEMBLY 23470 See step  54 - -
55 FUEL PUMP SPACER GASKET 23224D - - -
56 TEMPORARILY INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 23100X See step  56 - -
57 TEMPORARILY INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY 23801P See step  57 - -
58 INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 23100X See step  58 - -
59 INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY 23801P See step  59 - -
60 FUEL TUBE SUB-ASSEMBLY 23910A See step  60 - -
61 FUEL PIPE CLAMP 23841K - - -
62 NO. 1 INTAKE MANIFOLD TO HEAD GASKET 17177 - - -
63 INTAKE MANIFOLD 17111 See step  63 - -
64 NO. 2 WATER BY-PASS PIPE 16278 See step  64 - -
65 NO. 3 WATER BY-PASS PIPE 16279 See step  65 - -
66 SET EGR VALVE ASSEMBLY 25620 See step  66 - -
67 NO. 8 WATER BY-PASS HOSE 16296 - - -
68 NO. 4 WATER BY-PASS HOSE 16281 - - -
69 NO. 1 EGR COOLER GASKET 25685 See step  69 - -
70 EGR VALVE GASKET 25627 See step  70 - -
71 EGR COOLER ASSEMBLY 25680 See step  71 - -
72 NO. 4 WATER BY-PASS HOSE 16281 - - -
73 NO. 3 WATER BY-PASS HOSE 16267 - - -
74 INSTALL EGR VALVE ASSEMBLY 25620 See step  74 - -
75 EGR INLET GASKET 25628 - - -
76 EGR VALVE ADAPTER GASKET 25629 - - -
77 NO. 1 EGR PIPE SUB-ASSEMBLY 25601 See step  77 - -
78 THROTTLE BODY GASKET 22271 See step  78 - -
79 NO. 6 WATER BY-PASS HOSE 16283 See step  79 - -
80 THROTTLE BODY WITH MOTOR ASSEMBLY 22030 See step  80 - -
81 NO. 5 WATER BY-PASS HOSE 16282F See step  81 - -
*A for Type A *B for Type B
*C w/ Stud Bolt *D w/o Stud Bolt
*1 FUEL PUMP FLANGE - -
Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N.m (kgf/cm, ft.lbf) N.m (kgf/cm, ft.lbf): Specified torque
* For use with a union nut wrench • Non-reusable part
Fig 9: Cylinder Head Gasket Installation Components With Torque Specifications [08/2023 - ] (9 Of 9)
GTY1131079Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
82 EXHAUST MANIFOLD TO HEAD GASKET 17173 - - -
83 EXHAUST MANIFOLD 17141 See step  83 - -
84 MANIFOLD STAY 17118 See step  84 - -
85 NO. 1 EXHAUST MANIFOLD HEAT INSULATOR 17167 - - -
86 FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) 16260 See step  86 - -
87 NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY 16207 See step  87 - -
88 COMPRESSOR WITH MOTOR ASSEMBLY 88370 See step  88 - -
89 ENGINE HANGERS - See step  89 - -
90 REMOVE ENGINE ASSEMBLY FROM ENGINE STAND - See step  90 - -
*1 STUD BOLT - -
N.m (kgf/cm, ft.lbf): Specified torque * For use with a union nut wrench
• Non-reusable part - -
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