Updated: 17 Feb 2025

air fuel ratios

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Updated: 17 Feb 2025

#1

Best Choice
Innovate Motorsports 3891 38910 DLG-1 Dual Wideband Air/Fuel Ratio Gauge Kit

9.8

Innovate Motorsports

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Main highlights

Wideband O2 Compatible with several fuel types (Leaded, Unleaded, Diesel, E85 & more)

Perfect for all V configured engines

Monitor left and right exhaust banks on one single gauge
#2

Value for Money
Auto Meter 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in.

9.6

AUTO METER

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Why we love it

Easy installation with detailed instructions and all necessary hardware.

Accurate readings for precise engine tuning and fuel efficiency.

Compatible with most street and race car electrical systems.

Main highlights

Suitable for use with gasoline powered engines

Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU4.2 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation

0-4v data output feed for ECU, data acquisition unit, or Laptop tuning
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#3
AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

9.5

AEM

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Why we love it

87 larger display

0 5V output RS232 Serial Port

AEMnet CANbus output

Main highlights

Key Features
Modern display, larger by 87%, with X-Digital wideband technology for optimal engine tuning and safety. Includes multiple outputs for comprehensive data logging.

Ideal Use Cases
Best for engine tuning on inertia dynos, enhancing wideband feedback control for more accurate, powerful, and safer engine performance.

Customer Reviews
Most praised for its fast response time and accuracy, significantly improving engine tuning and performance reliability.
#4
Wideband UEGO Air/Fuel Ratio Gauge 52mm (2-1/16”) with 4.9 LSU Sensor, Digital AFR Controller Gauge, Wideband O2 Control Sensor kit | 0-5V Analog Output (10-20 AFR Range)

9.3

FHRHRY

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Why we love it

The digital LED display and LED needle make it easy to see the AFR.

The 52 mm 2 1/16 inch gauge housing fits most instrument pods.

The 4.9 LSU sensor is quick and accurate.

Main highlights

【WIDELY COMPATIBILITY】The 52 mm (2-1/16 inch) gauge housing ensures that it fits most instrument pods and can be installed remotely almost anywhere. Our digital wideband gauge have 0-5V analog output, which can be used with data loggers and almost all engine management systems. Confirm compatibility by model number rather than brand or image.

【PREMIUM QUALITY】Accurate A/F ratio data is crucial when adjusting the engine. The 4.9 LSU sensor provides speed and accuracy for the controller, it can react quickly even for every 0.1 air-fuel ratio change, allowing you more time to respond and protect your engine safety. At the same time, it never requires free-air calibration when used with our wideband O2 UEGO AFR gauge.

【AIR/FUEL RATIO UEGO GAUGE】Our wideband O2 AFR gauge has a digital LED display and LED "needle" that changes color as the AFR changes from rich to thin; Each gauge is equipped with black and silver bezels and black and white faceplates for multiple color combinations and customized appearance.
#5
AEM 52mm Wideband UEGO Air Fuel Ratio Sensor Controller Gauge w/White Face Kit

9.2

AEM

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Why we love it

Fastest response times

Variety of bezel colors

No free air calibration needed

Main highlights

Key Features
Fastest responding wideband AFR controller with Bosch 4.9LSU sensor. Includes white, black, and silver bezels. Displays Lambda values .55 to 2.00.

Ideal Use Cases
Perfect for tuning enthusiasts and for vehicles requiring precise fuel mixture monitoring to optimize performance and efficiency.

Customer Praise
Users frequently commend its accuracy and reliability, appreciating the easy installation and the included variety of bezel options for customization.
#6
Denso 234-9024 Air Fuel Ratio Sensor

9.1

Denso

-11%

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Main highlights

Highly accurate

Efficient Fuel Consumption

Easy installation

-11%
#7
(30-4110) UEGO Air/Fuel Ratio Gauge with 4.9 LSU Sensor, Wideband O2 Control Sensor kit | 0-5V Analog Output (10-20 AFR Range) - Digital AFR Controller Gauge

9.0

LEABON

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Main highlights

【UEGO Sensor Gives the Controller its Speed and Accuracy】The Wideband O2 air/fuel ratio UEGO gauge is a must if you want to maximize your engine's power and safety

【Accurate Air/fuel Ratio Data is Critical】digital Wideband AFR UEGO gauge can quickly alert you to even a .1 change in air/fuel ratio and provide enough time to shut down an engine before damage occurs

【52mm (2-1/16”) gauge housing 】Interchangeable black and white faceplates included for customizing gauge appearance, can be remotely mounted virtually anywhere
#8
AEM (30-4110) UEGO Air/Fuel Ratio Gauge

8.9

AEM

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Why we love it

The product includes black and white faceplates for customizing the gauges appearance.

The product includes a Bosch 4.9 LSU wideband sensor and weld in bung.

The product does not require free air sensor calibration.

Main highlights

No free air sensor calibration required ever. A 2-1/16 inch gauge housing ensures that it will fit in most gauge pods and can be remotely mounted virtually anywhere

Interchangeable black and white faceplates included for customizing gauge appearance.Material:Plastic

Bosch 4.9 LSU wideband sensor and weld-in bung included PN 30-4110
#9
SleYuYir Compatible with 30-4110 UEGO Air/Fuel Ratio Gauge Kit with AFR 52mm with 4.9 LSU Sensor, Wideband Sensor, WideBand A/F Ratio

8.8

SleYuYir

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Main highlights

VITAL ACCESSORIES - Using UEGO Air/Fuel Ratio Gauge Kit can effectively upgrade the performance of your car and ensure optimal fuel efficiency and performance. Whether you're a race driver or a daily driver, it's a very useful tool that can help you understand the engine's operating status and provide real-time feedback and adjustment suggestions.

PREMIUM QUALITY - The 30-4110 Air Fuel Ratio Gauge has a digital display for clear readings, an alarm for preset thresholds, and multiple installation methods. It logs data, is adjustable, accurate, easy to use, and wide applicability to various gasoline engines. It improves safety by monitoring real-time air-fuel ratio changes.

PART NUMBER - The UEGO air/fuel ratio kit features interchangeable black and white panels, replacing the previous model 30-4110
#10
Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor

8.7

Denso

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Main highlights

Manufactured to detect the amount of exhaust gas air fuel ratio.Material:Zirconium

Features zirconia solid electrolyte

Constructed from durable material

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air fuel ratios

Innovate Motorsports 3891 38910 DLG-1 Dual Wideband Air/Fuel Ratio Gauge Kit

9.8

Main highlights

Auto Meter 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in.

9.6

Why we love it

Main highlights

AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

9.5

Why we love it

Main highlights

Wideband UEGO Air/Fuel Ratio Gauge 52mm (2-1/16”) with 4.9 LSU Sensor, Digital AFR Controller Gauge, Wideband O2 Control Sensor kit | 0-5V Analog Output (10-20 AFR Range)

9.3

Why we love it

Main highlights

AEM 52mm Wideband UEGO Air Fuel Ratio Sensor Controller Gauge w/White Face Kit

9.2

Why we love it

Main highlights

Denso 234-9024 Air Fuel Ratio Sensor

9.1

Main highlights

(30-4110) UEGO Air/Fuel Ratio Gauge with 4.9 LSU Sensor, Wideband O2 Control Sensor kit | 0-5V Analog Output (10-20 AFR Range) - Digital AFR Controller Gauge

9.0

Main highlights

AEM (30-4110) UEGO Air/Fuel Ratio Gauge

8.9

Why we love it

Main highlights

SleYuYir Compatible with 30-4110 UEGO Air/Fuel Ratio Gauge Kit with AFR 52mm with 4.9 LSU Sensor, Wideband Sensor, WideBand A/F Ratio

8.8

Main highlights

Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor

8.7

Main highlights

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