Oxygen Sensors

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Fig 1: Oxygen Sensors Components Location With Torque Specification - V8 Turbo

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Oxygen sensors - V8 Turbo

Oxygen sensors upstream of catalytic converter/coat thread with hot screw paste > Tightening torque 52 Nm (38 ftlb.)
Oxygen sensors downstream of catalytic converter/coat thread with hot screw paste > Tightening torque 52 Nm (38 ftlb.)