Brand new coolant temperature fan switch for 90-93 Miata.
Fits 1990-1993 Mazda Miata with 1.6L engine.
This is the sensor that is installed on the front thermostat coolant neck and triggers the radiator fan to turn on and off.
Brand new sensor.

If you're planning some maintenance to your Miata, you should also plan ahead and buy one of these new sensors. It's easy to break your existing sensor when removing parts from the engine (experience speaking here *wink, wink*)
Good idea to buy a spare and keep it for when you need one.