Recommended 'Fast-Response' Intake Air Temp Sensor (IAT) for use on forced induction vehicles. These are the proper GM-style sensors for use with the MegaSquirt line of ECUs and come with the weatherproof connector and two crimp pins.

The threads are M12x1,5

If you need to calibrate your MS for this sensor, here's the calibration data we use for them for a three point curve.

Temperature     Ohms
-10 °C               9019
25 °C                2000
100 °C                192