Auto Meter Sport-Comp 2-1/16 inch (52.4 millimeter) Short Sweep Electric Cylinder Head Temperature Gauge (ranges 140- 340 degree fahrenheit). It features advanced 90 degree air core movements and simple three wire installation that characterize these high performance instruments. Electric sending units keep hazardous fluids in the engine compartment sending collected data through an electrical signal to quick reacting, precise air core movements to give you all the information that you need and nothing that you don’t. Includes 1/8 inch NPT Sender. Air-Core meter movement