Four Seasons 36542 Engine Cooling Fan Switch

Engine Cooling Fan Switch for Subaru

The Four Seasons Temperature Switch 36542 is an engine-mounted cooling fan switch built for direct temperature control in the cooling system. It uses a male connector with 2 terminals and an M16-1.50 fitting thread size for a straightforward OE-style replacement on select Subaru applications.

Compatible with 1980-1987 Subaru Standard models, this engine cooling fan switch opens at 194°F and closes at 203°F to help manage fan operation at the specified temperature range. Four Seasons Temperature Switch 36542 meets or exceeds OEM requirements and is cross-referenced to common replacement numbers for the same application.

Key Features

• Brand: Four Seasons Temperature Switch
• Part number: 36542
• Engine-mounted cooling fan switch
• Male connector with open connector shape
• 2-terminal electrical connection
• M16-1.50 male thread fitting
• Temperature off at 194°F and on at 203°F
• Meets or exceeds OEM requirements

Product Details

This Four Seasons 36542 cooling fan switch is built for engine-mounted coolant fan control on Subaru Standard vehicles from 1980 through 1987. The Temperature Switch line focuses on temperature-based switching for cooling system operation, making this part a direct-fit service component for applications that rely on a threaded engine-mounted sensor/switch location. If you are replacing a Subaru engine mounted coolant fan switch, this part number 36542 provides the specified thread, terminal count, and temperature range needed for the application.

This part cross-references Anchor 3436 and FTE 2111015 for the same application.

What It Helps Address

• Cooling fan not switching on at the specified temperature
• Cooling fan staying on longer than expected
• Faulty engine-mounted temperature switch signal
• Intermittent fan operation caused by switch wear
• Replacement needs for Subaru cooling system service

Installation Notes and Tips

Verify the connector style, terminal count, and M16-1.50 thread size before installation. Confirm the engine-mounted location and compare the temperature range to the original switch specification for your Subaru Standard application. Clean the mounting threads and inspect the connector for corrosion before connecting the harness.

Quality Assurance

Four Seasons lists this temperature switch as meeting or exceeding OEM requirements, supporting OE-style replacement expectations for the specified Subaru fitment.