Four Seasons 37834 Engine Cooling Fan Temperature Switch

Engine Cooling Fan Temperature Switch for Audi

The Four Seasons Temperature Switch, part number 37834, is an engine cooling fan temperature switch built for radiator-mounted temperature control. It uses a rectangular connector with 2 male terminals and meets or exceeds OEM requirements for direct-fit replacement service.

Compatible With select Audi 80, 90, 90 Quattro, 80 Quattro, 4000, 4000 Quattro, Coupe, Quattro, and 5000 Quattro applications, this switch is used in radiator-mounted cooling fan control systems. Four Seasons 37834 is a practical replacement when the original temperature switch no longer triggers the fan at the correct coolant temperature.

Key Features

• Four Seasons Temperature Switch, part number 37834
• Engine cooling fan temperature switch for radiator mount applications
• Rectangular connector shape with 2 male terminals
• System mount design for temperature-based fan control
• Meets or exceeds OEM specifications
• Direct replacement for select Audi cooling systems

Detailed Description

Four Seasons 37834 is a temperature switch designed for radiator-mounted engine cooling fan control. It monitors coolant temperature and signals the fan circuit when the system reaches the specified operating range. This helps maintain proper cooling performance in vehicles that rely on a radiator-mounted switch rather than a separate engine-mounted sensor. The Four Seasons Temperature Switch line focuses on replacement components for thermal management systems, and this part follows that approach with OE-level fit and function.

This part cross-references A14184 for the same application. It is commonly searched as a cooling fan temperature switch for Audi 80 radiator mount, Audi 90 temperature switch replacement, and Audi Coupe radiator temperature switch. Four Seasons 37834 also appears in searches for Audi 4000 Quattro and Audi Quattro cooling fan switch service.

What It Is Used For

• Restoring radiator fan activation at the correct coolant temperature
• Replacing a failed Audi cooling fan temperature switch
• Addressing fan operation that stays off when the engine warms up
• Correcting fan cycling issues caused by an inaccurate temperature signal
• Supporting stable engine cooling in radiator-mounted switch systems

Installation Notes and Tips

• Verify the connector style before installation: rectangular, 2-terminal, male.
• Confirm the switch location in the radiator or system mount position on the vehicle.
• Inspect the connector and wiring for corrosion or heat damage before installing the new switch.
• Use the vehicle’s service information to confirm the correct temperature range and thread/application details.
• After installation, check fan operation once the engine reaches operating temperature.

Quality Assurance

Four Seasons 37834 meets or exceeds OEM requirements for the listed applications. It is built for replacement use in Audi cooling systems where accurate temperature-based fan control is required.