C 320 4MATIC Sedan (203.084) V6-3.2L (112.953) (2003)
Engine 111.951 low emission D4
158
Catalytic converter
Engine 112
G3/3
Left O2 sensor upstream of catalytic converter
G3/5
Left O2 downstream of catalytic converter
Engine 112
G3/4
Right oxygen sensor, upstream catalytic converter for
G3/6
Right O2 sensor downstream of catalytic converter