Buy 1985 Subaru RX Engine Coolant Temperature Sender. Gauge Thermostat. Thermostat GUAGE - OEM Subaru Part # 21203AA000 (820804150)

MPI&B.

GAUGE ASSEMBLY-THERMO Engine Coolant Temperature Sender

Fits DL, GL, GL10, Loyale, RS, RX, XT

FED (4WD)&CAN.
Engine Coolant Temperature Sending Unit
If your engine coolant temperature sender has failed, you may notice one of several symptoms: your temperature gauge doesnt move, your engine overheats without warning, your radiator fans dont switch on, or they dont switch off. If your Subaru has any of these symptoms, it's a good idea to let a trained Subaru technician perform an inspection.