Knock Sensor with PlugApplications: All 2002 2011 K Series engines with Green K Series Knock Sensor Note: * Does NOT Fit Newer Model 2012+ K24Z series engines By now, the original knock sensor on many K Series engines are very old and brittle. Often the sensor is easily broken or already broken. If you have worked on your engine and tried to unplug the sensor chances are you've noticed the broken top sensor. This happens over time, because the plastic body becomes very