The Greddy Aluminum Water Neck Adapter has been designed with a 1/8PT provision to allow users to install a water temperature sensor into the upper radiator hose. Additionally, this adapter will include an 8mm diameter housing union for a water overflow.

This adapter has been fabricated from quality aluminum materials and will come in a nice anodized blue finish for extra protection against the elements. You can reuse your OEM radiator cap or you can also use the Greddy radiator cap.