Buy OEM GENERAL MOTORS Part # 12616506 (12590593). Oxygen Sensor (Rear, Lower). 2.0 liter. 2.0 liter, 2nd design. CANISTER & SENSORS, 2.0L. Cobalt; Rear (Position 2); 2.0L. Sky; 2.0L; Rear

Sensor. Oxygen.
2nd Design. Oxygen Sensor. Assembly - Heated (O2) (POSN 2). Ft. Snsr.

Oxygen Sensor

Fits Cobalt, HHR

2.0 liter. 2.0 liter, 2nd design. CANISTER & SENSORS, 2.0L. Cobalt; Rear (Position 2); 2.0L. Sky; 2.0L; Rear (Position 2). Solstice; Rear (Position 2); 2.0L; 2nd Design.
Oxygen Sensor - Repair or Replace
A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it does cause your to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and genuine parts.