O2 Sensor - Upstream · ComponentMounting Boltsfor 1999 Audi A8 3.7L V8 · AWDUnitslb-ftNmTorque20lb-ft27 NmOther components in O2 Sensor - UpstreamFlange Bolts35 lb-ft · 47 NmHanger Bolts15 lb-ft · 20 NmHeat Shield Bolts10 lb-ft · 14 NmManifold Nuts25 lb-ft · 34 NmO2 Sensor35 lb-ft · 47 Nm📝 Suggest a correction to this torque spec