Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Lexus GS 430FACTORY OEM SERVICE PROCEDURE
Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) |
|---|---|
| Center Exhaust Pipe-To-Tail Pipe Bolt | 32 (44) |
| Drain & Fill Plug | 15 (20) |
| Exhaust Pipe Support Bracket Bolt | 32 (44) |
| Front Exhaust-To-Manifold Bolt (3.0L) | 32 (44) |
| Front TWC-To-Exhaust Manifold Bolt (4.3L) | 46 (62) |
| Front TWC-To-Exhaust Pipe Bolt (4.3L) | 32 (44) |
| Heated Oxygen Sensor Bolt | 32 (44) |
| INCH Lbs. (N.m) | |
| Front Floor Center Brace | 62 (7) |
| Heat Insulator Bolt | 44 (5) |
| Oil Pan Bolt | 62 (7) |
| Oil Strainer Bolt | 89 (10) |
| PNP Switch Bolt | 124 (14) |
| PNP Switch Lock Nut | 62 (7) |
| Shift Lever Assembly Bolt | 71 (8) |
| Shift Lever Nut | 124 (14) |
| Shift Rod Bolt | 124 (14) |
| Solenoid Connector Bolt | 44 (5) |
| Solenoid Valves No. 1 & 3 | 53 (6) |
| Solenoid Valves No. 2 & 4 | 89 (10) |
| Solenoid Valve SLN | 89 (10) |
| Solenoid Valves SLT & SLU | 53 (6) |
| Solenoid Wiring Clamp Bolt | 53 (6) |
| Valve Body Bolt | 89 (10) |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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