Black & Blue MaxTow Wideband Air/Fuel Ratio Gauge

(You save $50.00 )
  • Same Day Shipping

    Same Day ShippingPlace Order by 3PM Eastern

  • Free Shipping Over $50

    Free Shipping Over $50Contiguous USA

  • One Year Limited Warranty

    One Year
    Limited Warranty

  • Free In-House Support

    Free In-House Support


MaxTow’s Black & Blue Double Vision™ Series Wideband Air/Fuel Ratio Gauge is essential when tuning any diesel truck allowing you to closely monitor your truck’s air to fuel ratio. Using this wideband air to fuel ratio gauge offers multiple benefits such as reduced emissions, higher fuel economy and maximized power and engine performance. This allows you to carefully map out your truck’s air to fuel ratios throughout the range of RPM and manifold pressure which results in maximized power output.

MaxTow’s Black & Blue Wideband Air/Fuel Ratio Gauge features Double Vision Technology which offers the user both analog and digital readouts from 10.0 to 20.0 AFR down to one decimal place. Each wideband air/fuel ratio gauge comes standard with the Bosch 4.9 LSU Wideband Oxygen Sensor that installs directly to the truck’s exhaust with the included weld-in bung and 13' sensor wire that connects to the back of the gauge. This wideband AFR gauge also has a data logging capability that allows you to connect it to virtually any data logging or engine management system for further fine tuning. MaxTow includes installation instructions, free lifetime technical support and a one year limited warranty with each purchase. Get ready to hit the road and Tow to the Max™

Rich: 10 ~ 12.9 AFR | Optimal: 13 ~ 17.9 AFR | Lean: 18 ~ 20 AFR

Note: The Wideband Oxygen Sensor includes Bosch’s 30 day manufacturer’s warranty. MaxTow does not warranty this oxygen sensor after that 30 day time frame.

  • 2 1/16" (52mm) Black Face Gauge with Magnified Lens
  • Double Vision Technology with Analog and Digital Readouts
  • Reads from 10.0 to 20.0 AFR Down to One Decimal Place
  • Digital 12 Volt Wideband Controller Unit with Data Logging Output
  • Bosch 4.9 LSU Wideband Oxygen Sensor
  • Blue LED Through Dial Lighting with a Red Illuminated Needle
  • Daytime Dimming Mode with 3 Customizable Brightness Settings
  • Nighttime Dimming Mode with 3 Customizable Brightness Settings
  • 13' Sensor Wire Harness
  • 5' Power Wire Harness
  • Weld-In Bung
  • Gauge Visor
  • Mounting Hardware
  • Installation Instructions
  • Free Lifetime Technical Support
  • One Year Limited Warranty
Clamp-On Oxygen Sensor Bung Adapter
Clamp-On Oxygen Sensor Bung Adapter:
  • Allows Easy Installation of Oxygen Sensor to Exhaust Pipe - No Welding Required
  • Clamp Sizes: 1-3/4"-2" | 2-1/4"-2-1/2" | 2-3/4"-3" | 3-1/4"-3-1/2"
  • Adapter Features M18 1.5 Thread for Oxygen Sensor
  • Includes Exhaust Gasket & Hardware
Tech Specs
Gauge Series: Black & Blue MaxTow Series
Brand: MaxTow
Gauge Type: Single Wideband Air/Fuel Ratio
Range of Reading: 10.0 - 20.0 AFR
Face Color: Black
Size: 52mm
Lens: Clear
Backlighting Color: Blue
Sending Unit: Electronic
Measurement Unit: Standard
Display: Combo
RICH: 10 ~ 12.9 AFR
OPTIMAL: 13 ~ 17.9 AFR
LEAN: 18 ~ 20 AFR

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 GlowShift products.

Download and Print the PDF PDF Instructions View Our Help Center Help Center