Buy OEM Engine-coolant-temperature-sender Part # 818218970A (8182-18-970A). Engine Coolant Temperature Sender. SWITCH and RELAY (ENGINE and TRANSMISSION); SWITCH and RELAY (ENGINE)

Engine Coolant Temperature Sender. Switch, THE.
Engine Coolant Temperature Sender.

Engine Coolant Temperature Sending Unit - Repair or Replace
If your engine coolant temperature sender has failed, you may notice one of several symptoms: your temperature gauge doesn’t move, your engine overheats without warning, your radiator fans don’t switch on, or they don’t switch off. If your Mazda has any of these symptoms, it's a good idea to let a trained Mazda technician perform an inspection.