Black & Blue MaxTow Wideband Air/Fuel Ratio Gauge

Your Price: $199.99

Item Number:
Gauge Series:
Black & Blue MaxTow Series
Gauge Type:
Wideband Air/Fuel Ratio
Range of Reading:
10.0 - 20.0 AFR
Face Color:
Backlighting Color:
Sending Unit:
Measurement Unit:
MaxTow Wideband Air Fuel Ratio Gauge Kit - Double Vision | Digital & Analog Readings - O2 Sensor - Black Dial | Blue LED - 52mm | 2-1/16"
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Installation Support
One Year Warranty

MaxTow’s Double Vision™ Black & Blue Wideband Air/Fuel Ratio Gauge is essential when you’re tuning any truck with a gas engine. Closely monitor your truck’s air to fuel ratio with analog and digital readouts from 10.0 to 20.0 AFR, accurate to one decimal place. Carefully map out your truck’s air to fuel ratios throughout the range of RPM and manifold pressure. This wideband air fuel ratio gauge delivers benefits like reduced emissions, higher fuel economy and maximized power output and engine performance. Get ready to hit the road and Tow to the Max™

MaxTow Black & Blue Double Vision Gauges MaxTow Black & Blue Double Vision Gauges

MaxTow’s Black & Blue Double Vision™ Gauge Series features a black gauge dial and blue LED display with an illuminated red needle. You get the classic look of an analog gauge combined with a blue digital numerical readout. This 2-1/16” (52mm) gauge outperforms the competition with features like stepper motor technology which allows for all needle movement to be exceptionally smooth and all gauge readings to be extremely accurate. Brightness Recall remembers the previous brightness setting before powering down your truck.

MaxTow Black & Blue Double Vision Wideband Air Fuel Ratio Gauges MaxTow Black & Blue Double Vision Wideband Air Fuel Ratio Gauges

MaxTow’s wideband air fuel ratio gauge kit includes a 10’ sensor harness and 5’ power harness, both with extended lengths for added flexibility during the wideband air fuel gauge install. There is also a 7’ Gauge Harness, and 3’ Data Logging Output Wire so you can connect to virtually any data logging or engine management system for further fine tuning. Easily attach harnesses to the back of the gauge by utilizing seamless Plug and Play connectivity. As you search for the best wideband gauge for your truck, MaxTow’s goal with our wiring kits is to make installation seamless and straightforward. Note: The Wideband Oxygen Sensor includes a 30 day manufacturer’s warranty. MaxTow does not warranty this oxygen sensor after that 30 day time frame.

What's Included

  • 2-1/16” (52mm) Wideband Air/Fuel Ratio Gauge
  • 4.9 LSU Wideband O2 Sensor
  • Digital 12 Volt Wideband Controller Unit with Data Logging Output
  • Mild Steel Weld-In Bung
  • Bung Plug
  • 10' Sensor Wire Harness
  • 7’ Gauge Harness
  • 3’ Data Logging Output Wire
  • 5’ Power Harness
  • Gauge Visor
  • Mounting Bracket
  • Mounting Bracket Hardware
  • Installation Instructions
MaxTow Black & Blue Dimming Modes

MaxTow wideband AFR gauges feature innovative Daytime and Nighttime Dimming Modes with three customizable brightness settings (Low, Medium, High) for each mode. This gives you multiple dimming options, allowing you to set your individual preference when hitting the road during the day or later on at night. Adjust for the right amount of brightness as you’re taking readings.

Benefits Of A MaxTow Wideband O2 Gauge Kit For Trucks

A MaxTow wideband air fuel gauge helps detect any issues with your oxygen sensor to avoid an increase in fuel consumption or pollutant emissions. A stoichiometric AFR is achieved when you have the correct amount of air and fuel. For gas engines, the stoichiometric ratio of 14.7:1 is optimal. A lower AFR number contains less air than the 14.7:1 ratio and is therefore classified as a richer mixture. An air/fuel mixture that is leaner than the stoichiometric ratio will have a higher AFR number, which results in more air being present and can be dangerous in turbocharged trucks. Installing the best wideband air fuel ratio gauge will ensure that you’re getting accurate readouts and feedback for your truck.

MaxTow Guarantee

MaxTow Gauges is your source for cutting-edge aftermarket automotive products specially designed for gas and diesel trucks. Shop with confidence knowing all purchases are backed by a One Year Limited Warranty and Free Lifetime Tech Support. You will also have access to an unrivaled customer support experience in the event you have any questions about our gauges, pods and accessories. Established in 2012 by truck owners for truck owners, we remain dedicated to getting the most out of any truck. Get ready to hit the road and Tow to the Max™

Tech Specs
Range of Reading: 10.0 to 20.0 AFR
Control Box Features: Data Logging
Sensor Type: 4.9 LSU Wideband Oxygen Sensor
Diameter of Gauge: 2-1/16" or 52mm
Depth of Gauge: 1-5/16" or 33mm
12-Volt Power Required:
Power Wire Harness Length: 3'
Included Parts List: Power Harness, 4.9 LSU Wideband Oxygen Sensor, Weld-In Bung, Digital 12 Volt Wideband Controller Unit with Data Logging Output, Mounting Hardware, Gauge Visor and Instructions
Power Harness Gauge Size: 18 Gauge

Includes an installation guide which is available online and included with your order. You can also visit our library of installation videos which include complete step-by-step tutorials and useful tips on how to install a wide range of MaxTow products.

Download and Print the PDF PDF Instructions