I found a Standard Motor Products Oxygen sensor, Upstream sensor, Vtec Engine for 170 or so, is that a specific fit for my car? Im a 95 tegra GSR. ACDelco Oxygen Sensor for B18C1 costs 98, and then their are some Universal Oxygen Sensor, Sensor Kits, B18C1 for like 65. But what is a sensor kit? and how is it universal if it is for B18c1? Can anyone shed some light on this for me?