General Motors 55572216, Oxygen Sensor Genuine Oem:Yes, Category 2:Powertrain Control, Superseded Part Number:55562206, Item Name:Oxygen Sensor, Category 1:Electrical Brand:GM, Fitment Type:Direct Replacement, Other Part Number:55562206, Part Ref# On Diagram:ONLY PART REFERENCE #9 ON THE DIAGRAM IS, Placement On Vehicle:Rear Manufacturer Part Number:55572216, Category 3:Powertrain Control, Alternate Item Name:Oxygen Sensor, Quantity Needed:1, Sme:_3161