I am trying to identify a part from the exhaust. on 1991 Buick Century

I found a part on the garage floor, looks like it came from the exhaust area and may be a sensor. Has exhaust carbon on it and has the #019 on the rim. Has plastic insert inside tapered tube

1 answer
Does this component have wires attached to it? Do you have an exhaust leak now that this part is no longer on the car?
Google search -Google images- oxygen sensor Does the part look like any of these images?
if you don't find an answer to your question if you want to take a digital picture and send it to me I will see if I can identify it for you
patrickmannion1@netzero
put in title Repairpal question