Instruct: Classify Amazon reviews into positive or negative sentiment
Query: no safety cap on sensor

dont buy from amazon.com they get the anti-seize grease all over the sensitve sensor and into tiny hole- destroying the sensor. Call Bosch if you dont believe me. Bosch sends out or packages all there oxygen sensors with a clear plastic cap on sensor portion and a cap on the pigtail. I have no idea what amazon.com distribtuon/fullfillment is doing- someone is taking off the caps or they are buying in bulk and not putting them on...Happened twice... dont buy