Keep a steady read on engine temperature with this Four Seasons switch, the Engine Coolant Temperature Sensor / Switch, part number 36407, which senses coolant temperature and signals the vehicle's electrical system. It fits many vehicles, among them the 1981-1996 Ford F-150, 1991-2000 Ford Explorer and 1981-1997 Ford F-250, as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list and engine details.
Four Seasons lists this part as both an engine coolant temperature sensor and a coolant temp sensor switch, so you may see it under either name. It works in contact with engine coolant and reports temperature changes to the vehicle.
- Brass construction: designed for accurate temperature sensing.
- Zinc-coated terminal: helps resist corrosion at the electrical connection.
- Color coded: for easy identification.
- Sealing included: comes with the gasket, O-ring or seal needed to properly replace the unit.
With more than 50 years of mobile A/C experience behind it, Four Seasons engineers and tests its products for dependable operation. If a failed coolant temperature sensor / switch is behind an erratic or dead temperature gauge, this unit replaces it. Diagnose the cause before replacing, since wiring or other cooling-system faults can produce similar symptoms.
Frequently Asked Questions
Does this Explorer switch fit my 1991-2000 Ford Explorer?
Yes, part 36407 is listed for the 1991-2000 Ford Explorer, along with the 1981-1996 Ford F-150 and 1981-1997 Ford F-250. See the "Vehicles it fits" section for engine details.
What does a coolant temperature sensor / switch do?
It senses engine coolant temperature and sends a matching signal to the vehicle's electrical system, used by the temperature gauge or engine controls depending on the application.
What comes in the box?
The sensor / switch ships with the gasket, O-ring or seal needed to properly replace it.
What is the Four Seasons 36407 made of?
It has brass construction for accurate temperature sensing, a zinc-coated terminal that helps resist corrosion, and color coding for easy identification.
What are signs this sensor may need replacing?
Possible signs include a temperature gauge reading erratically or not at all, coolant seeping at the sensor, or a warning light on some vehicles. Diagnose first, as wiring or cooling faults can mimic these.
