Four Seasons 36484 Engine Cooling Fan Switch

Reliable Engine Cooling Fan Switch for BMW Models

The Four Seasons Temperature Switch part number 36484 is designed to maintain optimal engine temperature by controlling the cooling fan operation. Specifically engineered for BMW 528i, 540i, 740i, 740iL, and 750iL models, this radiator-mounted temperature switch ensures precise fan activation between 195°F and 220°F.

• Connector color: White with a rectangular shape for secure fit
• Three terminal female connector for reliable electrical connection
• Male fitting with M14 x 1.50 thread size for radiator mounting
• Temperature switch function activates fan when engine reaches 195°F to 220°F
• Meets or exceeds OEM specifications for dependable performance

About the Four Seasons Temperature Switch Product Line

The Four Seasons Temperature Switch line focuses on temperature-sensitive components that regulate engine cooling systems. This product line offers switches designed to activate cooling fans at precise temperature thresholds, helping maintain engine efficiency and prevent overheating. The 36484 switch is part of this line, providing a direct replacement that matches OEM fit and function for select BMW vehicles.

Detailed Product Description

The Four Seasons 36484 engine cooling fan switch is a temperature-activated switch mounted directly on the radiator. It features a white rectangular female connector with three terminals, ensuring a secure and stable electrical connection. The switch uses a male fitting with an M14 x 1.50 thread size for easy installation on the radiator mount. It is designed to open the fan circuit when the engine temperature reaches between 195°F and 220°F, allowing the cooling fan to operate and maintain optimal engine temperature. This switch is compatible with BMW 528i, 540i, 740i, 740iL, and 750iL models, providing a reliable replacement part that meets or exceeds original equipment manufacturer standards.

Common Applications and Issues Addressed

• Prevents engine overheating by activating the cooling fan at the correct temperature
• Resolves intermittent or non-functioning cooling fan problems
• Replaces faulty or worn temperature switches causing erratic fan operation
• Helps maintain consistent engine temperature for improved performance
• Ensures proper radiator fan control in BMW 5 and 7 Series vehicles

Installation Notes and Tips

• Ensure the engine is cool before removing the old temperature switch
• Use appropriate tools to avoid damaging the M14 x 1.50 threaded fitting
• Verify connector orientation matches the white rectangular female connector on the switch
• Check for secure electrical connections on all three terminals
• Test fan operation after installation to confirm proper function

Quality Assurance and Warranty

The Four Seasons Temperature Switch 36484 is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. This part undergoes rigorous quality control to provide consistent operation in demanding engine environments. While specific warranty details may vary, Four Seasons products typically include a limited warranty against defects in materials and workmanship.