B/D-Series Fan Switch (Coolant) Sensor

This is one of two sensors located on the head that deals with coolant, this controls the operation of the radiator fan.

★ Accurate Temperature Reading
Provides consistent coolant temperature data to the ECU, supporting proper fuel mixture, ignition timing, and fan operation.

★ Brass Construction
Features a brass housing for durability and resistance to corrosion in coolant environments. Built to handle repeated heat cycles.

★ Reliable Electrical Connection
Designed for stable signal output and secure connection to the factory wiring harness.

★ Restores System Function
Ideal for replacing faulty sensors that may cause hard starts, poor idle, or incorrect temperature readings.