This adapter allows the placement of a water temperature sensor inline in your stock radiator hose. Just cut a section out of the hose, insert the adapter, and you’re ready to go. There’s a ground wire fitting to help prevent electrolytic corrosion. It even comes with hose clamps.
The gauge sender hole is a 1/8″ NPT fitting size. Anodized black finish.
Fits any stock-size Subaru WRX or WRX STI radiator hose.