Autometer 2259 Short Probe Replacement Short Sweep Temperature Gauge Sending Unit

The 2258 and 2259 are interchangeable. Most short sweep Autometer oil, transmission and water temperature gauges include the longer 2258 with the gauge. Cylinder head temperature gauges typically include the shorter 2259.

On the 2258, underneath the pipe thread, the probe is 5/16" diameter and 1/2" long. In some cases, for example using a brass tee fitting or AN fitting, the 2258 is too long and you'd purchase the 2259 instead.

If you have a full sweep temperature gauge, you would use the 2252 sending unit instead. Or if you have a really old pre 1995 gauge, you would use the 2253 instead.

Single #10 screw terminal