Autometer 2 1/16" (52mm) O.D. Ultra-Lite Digital Wideband STREET Air/Fuel ratio gauge kit. Gauge reads lean/rich condition. Yes, they are finally here, the STREET wide band air fuel ratio Autometer gauges have finally arrived. This is the best A/F ratio gauge on the market! Comes complete with everything you need including an 8 foot wiring harness and a Bosch wideband O2 sensor.

Part # 4379

Features:
- Data can be  in the regular numerical air fuel ratio.

- Includes an 8 foot wiring harness and a Bosch wideband oxygen sensor.

- Will read Air fuel ratios in the 10:1 to 17:1 range for gasoline engines.

- Gauge has a 0-4 volt output data port that can be used for data acquisition,
to connect to an ECU, or for custom tuning on your laptop.

- Made in the USA.

- Silver bezel.

- Comes with detailed instructions.