Oxygen Sensor LSU4.2 or the newer 4.9 5-wire, wide-band O2 sensor for dynotune and innovate controllers. Many other wideband systems use this same sensor.

Note: You must use a heat sink bung for turbo or supercharged applications! Failure to use the heat sink bung will damage the o2 sensor. see the sensors section for the heat sink bung. If your not sure what sensor you have check your documentation that came with your controller or give us a call!