The Mishimoto water temperature adapter will fit into the top radiator hose of all Impreza models from 1992-2007.
By placing the sensor in the hose and thus directly in the path of the water to the radiator, you are ensuring the most accurate reading possible. Being able to accurately gauge the temperature of the water aids in preventing overheating.
As recommended on many Subaru Forums.
Highest quality precision machined 38mm pipe with brass adapter which will allow the fitment of any gauge that uses a 1/8" NPT sender
Supplied with two high quality hose clips.