2015-2016, 2018-2021 Subaru WRX 2.0L H4. 2013-2014 Subaru WRX 2.5L H4. Notes: NTK Engine Coolant Temperature Sensor. THE NTK DIFFERENCE: Thread sealant/o-ring installed where applicable. Proper thermal conductive grease to provide accurate temperature transfer to the thermistor.
