O2 Sensor - Upstream · ComponentMounting Boltsfor 2012 Mazda Mazda3 2.0L I4 · FWDUnitslb-ftNmTorque20lb-ft27 NmOther components in O2 Sensor - UpstreamExhaust Flange Bolts33 lb-ft · 45 NmFlange Bolts35 lb-ft · 47 NmHanger Bolts15 lb-ft · 20 NmHeat Shield Bolts7 lb-ft · 10 NmO2 Sensor33 lb-ft · 45 Nm📝 Suggest a correction to this torque spec