A standout amongst the most vital sensors in your vehicle is an oxygen sensor. By measuring grouping of oxygen in the system, it helps the ECU calibrate the air-fuel blend and gives your vehicle a chance to perform to its maximum capacity. Be that as it may, the oxygen sensor is regularly ignored. We don't realize that it is harmed until the auto comes up short the emanations test. U.S Ignition System offers you substitution oxygen sensors that are indistinguishable to the OE parts however fetched a great deal less.