O2 sensors position - GF07.04-P-4103-02GQ

Model 210 

Engine 111.957 

Fig 1: Identifying O2 Sensor Position, Upstream Of TWC (Engine 111.957)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Engine 111.957 

Fig 2: Identifying O2 Sensor Position, Downstream Of TWC (Engine 111.957)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Engine 111 

located in cross connection pipe

Fig 3: Identifying O2 Sensor Position, Upstream Of TWC (Engine 111)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Engine 112, 113 

one O₂ sensor downstream of firewall catalytic converter for each bank of cylinders/exhaust stream

Fig 4: Identifying O2 Sensor Position, Downstream Of TWC (Engine 112, 113)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Engine 112, 113 

Fig 5: Identifying O2 Sensor Position On Right, Upstream Of TWC (Engine 112, 113)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Engine 112, 113 

Fig 6: Identifying O2 Sensor Position On Left, Upstream Of TWC (Engine 112, 113)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.