JDM Wideband Air Fuel Ratio Gauge




Prosport’s JDM Series 52mm Wideband Air/Fuel Ratio Gauge will display Amber and White Analog and Blue Digital at the same time.

It provides data on exactly how rich or lean an engine is running at any load. This Gauge is essential when tuning any performance vehicle on or off the Dynometer. Allowing you to closely tune and monitor your vehicles air to fuel ratio. This results reduced emissions, higher fuel economy, and maximized power.

Utilizing the latest Bosch wideband O2 sensor -5 wire heated LSU 4.9 (Prosport Inc. is the only one in the USA to use them) our gauge now has the widest range 10.0:1 to 20.0:1 AFR readings on the planet.

Prosport’s wideband air/fuel gauge also comes standard with a 0 to 5 volt digital output that allows you to connect it to virtually any data logging or engine management system

Featuring a Dual color (Amber, white) Analog readout in the center of the gauge with trailing LED’s around the outside of the scale plate AND a Blue Digital display for immediate reference to AFR.

These gauges are very thin, perfect for tight mounting options only 1 3/8″ deep

This is a complete kit that includes everything you need:

JDM Series Wideband Air Fuel Ratio Gauge (52mm (2 1/16″)

Bosch 4.9,  5 wire heated O2 sensor

Weld in sensor Bung

Dash mount gauge pod

Gauge visor


Installation and mounting hardware

Wiring harness (Gauge to O2 sensor) 10 feet long

Plug and play wiring harness



0-5 volt data signal for data logging

One year limited warrantee

 NOTE: The included Bosch 4.9 LSU Wideband o2 Sensor includes Bosch’s 30 day manufacturer’s warranty.


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