This is an engine coolant temperature sensor with a 3/8 in NPT thread. It reports coolant temperature to the engine control module and gauges, and it threads into the cooling passage on the GM applications it fits.
Specifications:
- Coolant Temperature Sensor
- 3/8 in NPT
- Various Vehicles
- Sold as: Each
- Part number: 15326386
Applications:
- Various GM vehicles (3/8 in NPT)
FAQ
What thread size is this sensor?
It uses a 3/8 in NPT thread.
What does the sensor do?
It reports coolant temperature to the engine control module and the temperature gauge.
Where does it install?
It threads into a coolant passage, typically in the cylinder head or intake.

