300SL (129.061) L6-3.0L (104.981) (1991)
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Oxygen Sensor: Locations
Fig. 115 Oxygen Sensor Location
The oxygen sensor is installed in the exhaust system upstream of the catalytic converter.
Fig. 96 O2 Sensor Connection Location
The oxygen sensor connector is located underneath the car on the passenger side of the transmission tunnel.
O2 Sensor Terminal Designations
oxygen sensor connector view.
