engineExhaust Manifold Gasket Torque Specsfor 2002 Lexus SC 430 4.3L V8 · RWDUnitslb-ftNm10 fastenersSeqComponentTorqueAngle—Cover Bolts12 lb-ft · 16 Nm——EGR Tube FittingIf equipped26 lb-ft · 35 Nm——Exhaust Flange BoltsCriticalApply anti-seize33 lb-ft · 45 Nm——Exhaust Manifold NutsCriticalApply anti-seize, work hot-to-cold22 lb-ft · 30 Nm——Exhaust Manifold StudsIf replacing studs11 lb-ft · 15 Nm——Flange BoltsCriticalAnti-seize35 lb-ft · 47 Nm——Hanger Bolts15 lb-ft · 20 Nm——Heat Shield Bolts7 lb-ft · 10 Nm——Mounting BoltsCritical35 lb-ft · 47 Nm——O2 SensorCriticalApply anti-seize to threads only33 lb-ft · 45 Nm—📝 Suggest a correction to this torque spec