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Round 52mm air-fuel gauge with smoked lens and white LED face

Dyno Racing

Dyno Racing 52mm Air Fuel Ratio Gauge Smoke Lens

SKU CH-AXT7-WED63

A 52mm narrowband air-fuel ratio gauge with a smoke-tint lens, super-white LED display and red illuminated needles for 12V systems

  • Gauge typeAir Fuel Ratio
  • Product typeGauges
  • 52 mm diameter fits standard gauge pods
  • Smoke tint lens stays subtle by day and glows clear at night
  • Super-bright white LEDs with red needles give instant air-fuel readout
  • Narrowband sensor input works with 12 V vehicle systems
  • Mounting hardware and English manual included for straightforward install

What this gauge does

The Dyno Racing 52mm Air Fuel Ratio Gauge mounts in a standard 52mm cutout and reads exhaust oxygen through a narrowband sensor. It is intended for drivers who want a quick visual check of mixture richness while tuning or monitoring a petrol engine.

Critical spec: narrowband operation

This unit works only with a narrowband sensor, which switches sharply around the stoichiometric point rather than reporting a continuous lambda value. Builders who need precise wideband data for forced-induction or race calibration should look elsewhere.

Thermals, noise and power draw

The gauge draws a maximum of .3 amps on both ignition and illumination circuits from a 10 to 15 volt DC supply, typical of a 12 volt vehicle system. It has no moving parts or fan, so it runs silently and adds negligible heat to the dashboard.

How it compares

Measured against everything we stock in Gauges & Tachometers, at today’s prices. Recalculated every night.

Price $37.99
Typical for this category: the median of 193 items is $35.99.

Specifications

Product
Product typeGauges
More details
Gauge typeAir Fuel Ratio

Questions about this item

What does the narrowband air-fuel ratio reading tell me while driving?

The narrowband gauge shows whether the mixture is richer or leaner than the ideal stoichiometric point so you can spot sudden changes during acceleration or load.

What voltage range does the gauge need from the vehicle electrical system?

It operates on a DC supply between 10 V and 15 V, drawing up to 0.3 A on both the ignition and illumination circuits.

What size hole must I cut in the dashboard or panel to mount the gauge?

Cut a 52 mm diameter opening and secure the unit with the supplied mounting clamps.

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