K-Series Knock Sensor w/plugApplications: All 2002 2011 K Series Engines with BLACK K Series Knock Sensors Note: Excludes K24Z Series Does not fit Newer Models 2021+ K24Z Series engines By now, the original knock sensor on many K Series engines is 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 of the sensor. This happens over time, because the