Autometer Digital Air Fuel Ratio Gauge for the Chevy Camaro.  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) and the digital display reads from Lean to Rich.  Look to this digital gauge when you need an eye catching visual reference and an exact numeric reading.   

This gauge will work with most factory narrow-band 02 sensors.  Autometer part 2244 Narrowband Oxygen Sensor Kit is recommended.  Part 2244 is not compatible with wide band air fuel gauges.

This gauge has no provision for dial illumination/back lighting.