Autometer Digital Pyrometer Gauge for the Chevy Cobalt.  Autometer is a leader in after market performance gauges.

This is from the Cobalt Series of gauges.  Its diameter is 2 1/16" (52.4mm) with a range of 0-2000 degrees F.    

This is a LED digital display which features E-Z View Display System with maximizes readability and minimizes distracting high speed digit changes

The gauge comes with 8 feet of tubing or wiring harness and a Type K Thermocouple.