Four Seasons 37429 Engine Cooling Fan Temperature Switch

Engine Cooling Fan Temperature Switch Overview

The Four Seasons 37429 is an engine cooling fan temperature switch for radiator-mount applications. It monitors coolant temperature and signals the cooling fan circuit when temperature thresholds are reached, helping maintain proper engine operating temperature in everyday driving and stop-and-go traffic.

Built as a temperature-style switch with a round connector, male terminals, and a 2-terminal layout, this Four Seasons Temperature Switch is made to meet or exceed OEM requirements. It is a direct-fit service part for drivers searching for a radiator mount temperature switch, engine cooling fan temperature switch, or Four Seasons 37429 replacement.

Key Features

• Four Seasons Temperature Switch line for cooling system service
• Part number 37429 for easy identification
• Radiator-mount switch design
• Round connector with male terminals
• 2-terminal electrical connection
• Temperature-style function for fan control
• Meets or exceeds OEM specifications

Product Details

This engine cooling fan temperature switch is used in cooling system circuits that rely on a radiator-mounted sensor to trigger fan operation. It is a practical replacement for vehicles needing a direct OE-style temperature switch, including applications searched as Honda Civic temperature switch replacement, Toyota Corolla cooling fan switch, and Ford Focus radiator fan temperature switch. The Four Seasons 37429 also cross-references A03829 and TU176 for the same application.

As part of the Four Seasons Temperature Switch product line, this component focuses on accurate temperature-based switching and straightforward electrical connection. If you are replacing a worn radiator mount switch or diagnosing fan operation concerns, Four Seasons 37429 provides the correct style, connector shape, and terminal count for the intended cooling system setup.

Common Issues This Part Can Address

• Cooling fan does not switch on at the proper temperature
• Cooling fan runs inconsistently due to a failing temperature switch
• Engine temperature rises in traffic or at idle
• Radiator-mounted switch shows electrical or connector wear
• Cooling system warning symptoms tied to fan control circuit faults

Installation Notes and Tips

Verify the connector shape, terminal quantity, and mounting style before installation. This part uses a round, 2-terminal male connector and a system-mount, radiator-mount configuration, so matching the original switch design is important for proper fitment. Confirm the vehicle’s cooling fan control strategy and compare the old part number to Four Seasons 37429 before replacement.

For fitment-based searches, this part is commonly referenced for Honda Civic, Toyota Corolla, and Ford Focus cooling system service, but final application should always be matched to the original equipment specification.

Quality Assurance

Four Seasons states that this temperature switch meets or exceeds OEM requirements, supporting OE-style replacement quality for cooling system repair.