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.
2005 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Torque Specification
TORQUE SPECIFICATION - EXHAUST
| Part tightened | N.m | kgf.cm | ft.lbf |
|---|---|---|---|
| Exhaust manifold sub-assy RH x Cylinder head | 44 | 449 | 32 |
| Exhaust manifold sub-assy LH x Cylinder head | 44 | 449 | 32 |
| TWC x Exhaust manifold | 62 | 632 | 46 |
| Exhaust pipe assy front x TWC | 43 | 438 | 32 |
| No. 1 support bracket sub-assy x Transmission | 43 | 438 | 32 |
| Exhaust pipe assy center x Tailpipe assy | 43 | 438 | 32 |
| Oxygen sensor x Exhaust pipe assy front | 43 | 438 | 32 |
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.