Febi 61-31-1-364-272 91 Auxiliary Fan Switch 91°C 2-Prong White Top

The Febi 61-31-1-364-272 91 is an auxiliary cooling fan switch designed to activate the radiator cooling fan at 91 degrees Celsius (196°F). This temperature-activated switch plays a critical role in preventing engine overheating by sending a signal to turn on the auxiliary fan when coolant temperatures reach the specified threshold.

Key Features:

• Activation temperature: 91°C (196°F)
• 2-prong electrical connector with white top for easy identification
• Direct replacement for BMW OE part number 61311364272
• Precision-engineered temperature sensor ensures accurate fan activation
• Helps prevent engine damage from excessive heat during low-speed or stationary operation

The auxiliary fan switch is particularly important during idle and low-speed driving conditions when airflow through the radiator is minimal. When the sensor detects coolant temperatures reaching 91°C, it closes the circuit to activate the auxiliary cooling fan, drawing additional air through the radiator to maintain optimal engine temperature. If your auxiliary fan is not activating and the fan motor has tested good, a faulty temperature switch is often the culprit.

Installation Note: O-ring seal not included and should be ordered separately. Some coolant loss is normal during replacement.