Four Seasons 37433 Engine Cooling Fan Temperature Switch

Engine Cooling Fan Temperature Switch for Mazda 626

Four Seasons Temperature Switch 37433 is an engine cooling fan temperature switch built for radiator-mounted applications. It provides direct temperature-based fan control for 1986-1991 Mazda 626 models with the switch located in the radiator.

As part of the Four Seasons Temperature Switch line, this component is focused on accurate thermal switching for cooling system operation. Four Seasons 37433 meets or exceeds OEM requirements and uses a 2-terminal male connector with a system-mount design.

Key Features

• Engine cooling fan temperature switch for radiator mount applications
• Fits 1986-1991 Mazda 626, located in radiator; temperature switch
• Four Seasons part number 37433
• 2-terminal male connector
• Connector shape: other design
• Temperature-style switch with system mount location
• Meets or exceeds OEM requirements

Detailed Product Information

This Four Seasons Temperature Switch is designed for vehicles that rely on a radiator-mounted thermal switch to trigger cooling fan operation. For Mazda 626 cooling system service, 37433 supports temperature-based fan control using the specified 2-terminal male connection and radiator-mounted configuration. The part cross-references A03833 and TU170 for the same application.

Use Four Seasons 37433 when replacing a worn or faulty engine cooling fan temperature switch on 1986-1991 Mazda 626 models. The part number 37433 is also useful when searching for a direct replacement by OE-style reference or interchange number.

Common Problems This Part Can Address

• Cooling fan does not switch on at the correct temperature
• Cooling fan runs inconsistently due to a failing radiator-mounted switch
• Engine temperature rises because fan control is interrupted
• Intermittent electrical contact at the temperature switch connector
• Replacement needed for a worn Mazda 626 radiator temperature switch

Installation Notes and Tips

Install this switch in the radiator-mounted location specified for the vehicle application. Confirm the connector style, terminal count, and mounting arrangement before installation. Verify the cooling system is in proper condition and check for corrosion or damage at the connector before reconnecting the harness.

For fitment reference, this part fits 1986-1991 Mazda 626, N/A, with the switch located in the radiator. Always match the application details to the vehicle’s original cooling fan temperature switch setup before replacement.

Quality Assurance

Four Seasons 37433 is built to meet or exceed OEM specifications for the listed application, supporting dependable cooling system service on Mazda 626 models.