When replacing this Valve on a vehicle that is not equipped with a ECT Sensor, it may be necessary to install a Plug (part # 977926) and a Seal Ring (part # 947281) in the ECT sensor port.
This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
ECT Sensor - Course Thread
Generally this "Course Threaded" Sensor is used on applications where the Sensor is mounted in the EGR Valve, not in the EGR Pipe.