Coolant Temp SensorSmall ThreadInc Plug &amp PinsThe Haltech Coolant Temperature Sensor (CTS)provides instantaneous coolant temperature information to theElectronic Control Unit (ECU). . The HaltechCTS is made to OEM specifications andcouples with a weatherproof wiring connector.Coolant Temperature Sensors should be used with all engineconfigurations.The Haltech Coolant Temperature Sensor includes plug andpins.