Also known as a Radiator Hose Sender Adapter.
TRM NO LONGER PRODUCES THIS ITEM, BUT,.....MISHIMOTO DOES. Find it here... MMWHS-38
PLEASE LOOK AT THE LISTING FOR THE MMWHS-38
However they only make the 38mm size.
38mm Tee Joint for installing a temperature sensor in your cooling system. This adapter will work with any radiator hose with a 36mm or 38mm (+/-1mm) upper radiator hose.
No more drilling a hole in your thermostat housing or head.
Threads for the temperature sensor are 1/8inch NPT, standard for all VDO and autometer senders.
If you want to return the car to stock form, with this adapter you can simply replace the hose that was cut to initially install the adapter. No more plugging a hole in your thermostat housing or head and hoping nobody notices.