Instruct: Classify the given review into positive or negative sentiment.
Query: O2 Sensor For Saturn Vue with 4 cylinder engine

This is probably the highest quality O2 sensor available and on Amazon this is the best price. What I found when searching for the "correct" O2 sensor was that this particular sensor is shown as being "not correct for my vehicle" on Amazon. This IS the correct sensor and after searching all the online parts stores to make sure I ordered from Amazon. The price on Amazon is substantially lower than the online auto parts stores. I installed this in the "after converter" position and it works like a champ! So if you need an O2 sensor and this is the correct part you cannot beat the cost from Amazon!