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.
2003 Lexus GX 470FACTORY OEM SERVICE PROCEDURE
Torque Specification
TORQUE SPECIFICATION CHART
| Part Tightened | N.m | kgf.cm | ft.lbf |
| Delivery pipe x Intake manifold | 21 | 214 | 16 |
| Delivery pipe No.2 x Intake manifold | 21 | 214 | 16 |
| Fuel hose x Delivery pipe | 39 | 400 | 29 |
| Vacuum switching valve assy No.1 x Intake manifold | 18 | 185 | 13 |
| Fuel pipe sub-assy No.3 x Intake manifold | 7.5 | 80 | 66 in..lbf |
| Fuel pipe sub-assy No.1 x Delivery pipe | 39 | 400 | 29 |
| Throttle body cover sub-assy x Intake manifold | 7.5 | 80 | 66 in..lbf |
| Fuel tank x Body | 40 | 408 | 30 |
| Fuel tank protector sub-assy No.1 x Body | 20 | 204 | 15 |
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.