Our 20 Favorites:
Best Air/Fuel Ratio Gauge For Carburetor Reviews:
Bestseller No. 1 
Auto Meter 3379 Sport-Comp Wide Band Air Fuel Ratio Kit,2.3125 in.
- 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
- Suitable for use with gasoline powered engines
- Digital segment display and LED radial bar graph display
- 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system
Bestseller No. 2 
Edelbrock 6593 Air/Fuel Ratio Gauge , Black
- Helps to improve ignition spark advance curves
- Used as a tuning tool
- Consists of an oxygen sensor and a calibrated electronic display
- Used to guide carburetor adjustment and jetting
- Includes oxygen sensor / bung, harness, display unit and installation instructions
Bestseller No. 3 
WATERWICH Air/Fuel Ratio AFR Gauge Kit 2inches 52mm 12V Universal for Car SUV Vehicle Automotive
- 1.Easily display at night:Our gauge is highly visible with a WHITE Light,easy viewing at all angles during any lighting conditions,2-1/16" (52mm) Diameter with Black Dial, Illuminated Red Needle & black face gauge.
- 2.WATERWICH Air/Fuel Ratio Gauge Reads Vehicle's Air to Fuel Mixture from 10 to 20 AFR - AFR Quality & Values | Rich: 18 ~ 20 AFR | Optimal: 12 ~ 18 AFR | Lean: 10 ~ 12 AFR.
- 3.Easy installation:Our gauge includes electric wire with necessary mounting and installation hardware,no need other sensor, your existing oxygen sensor can fit it well.
- 4.Air/Fuel Ratio Gauge Monitoring car's air/fuel ratio lean-optimal-rich(from 10.0 to 20.0),so you can change air to fuel ratio to maximized power and engine performance, reduced emissions, and higher fuel economy.
- 5.DC8V and 18V compatible, Wide Compatibility: Universal for Car,SUV,Vehicle Automotive etc. Displays Lean, Rich, and Optimal Air/Fuel Mixtures,All gauges are brand new, complete in box.
SaleBestseller No. 4 
AEM (30-4110) UEGO Air/Fuel Ratio Gauge
- 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
- 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 silver bezels included. 52mm (2-1/16”) gauge housing
- 0-5V analog output 10-20 AFR range only
Bestseller No. 5 
30-4110 UEGO Air/Fuel Ratio Gauge AFR 52mm with 4.9 LSU Sensor, wideband Sensor, WideBand A/F Ratio UEGO O2 Controller Gauge Kit
- 🔧[WARRANTY] - Please don't worry about the quality of the product, our 30-4110 provide a lifetime warranty, if you have any quality problems after purchasing the product, you can always contact us for an exchange or refund.
- 🔧[AIR/FUEL RATIO GAUGE] - UEGO Air/Fuel Ratio Gauge is a broadband UEGO Air/Fuel Ratio Controller (AFR) and instrumentation in one. It combines precision, speed, and control with an easy-to-read digital LED display and LED "pointers" that change colors as the AFR changes from rich to thin.
- 🔧[FUNCTION] - Accurate AFR data is critical when tuning an engine. Using a wideband air/fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency.
- 🔧[HIGH QUALITY] - Every air fuel ratio gauge features a 0-5V analog output, compatible with data loggers and practically any engine management system. In use, it’s highly responsive and accurate, thanks to a UEGO sensor housed inside.
- 🔧[INSTALL] - Thanks to its 52mm housing, the versatile gauge will fit into the majority of gauge pods. The gauge also features interchangeable faceplates and bezels, making it simple to achieve the ideal look for your car. To help you get started, the device comes with everything you’ll need for a hassle-free installation.
Bestseller No. 6 
Equus 8366 2" Air/Fuel Ratio Gauge, White with Aluminum Bezel
- Connect to oxygen sensor and determine whether the engine is running rich or lean for maximum performance efficiency
- Dual display offers independent or dual left/right bank vs. inline readings
- Color LEDs provide a quick visual display of air/fuel ratio
- Aluminum bezel is lightweight and optimizes appearance
- Rear twist-on ring mount design makes mounting simple
SaleBestseller No. 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
- 【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
- 【High Quality】This Wideband O2 air/fuel ratio UEGO gauge, Built to strict quality control standards, 100% tested prior to leaving the factory. It is made of high-quality durable materials to ensure reliable performance and a long service life so that your vehicle performs well even in the harshest of conditions
- 【Guarantee】We have the best after-sales service in the industry! if there is any problem, If there is any problem, it will be replaced for free for life
SaleBestseller No. 8 
ARTILAURA 2-1/16" 52mm LED Digital Air/Fuel Ratio Gauge Racing with Narrowband O2 Oxygen Sensor for 12V Car
- 🚗【Function】LCD Color Screen, LED display for easy reading in the darkness.
- 🚗【Range】 2-1/16" (52mm) gauge with black dial. Air/Fuel Ratio readings from 10.00 to 20.00 AFR.
- 🚗【Applicability】Air Fuel Ratio gauge compatible for 12 volt car. High sensitivity and easy operation.
- ✅【Oxygen Sensor】Oxygen Sensor OEM:0258006028, Working Voltage: DC12V, Spiral: M18*1.5, Use Wrench: 22mm, Output Voltage: Maximum value ≥900mv/ minimum value ≤50mv.
- ⭐⭐⭐⭐⭐［After-Sale Guarantee］Includes 1x Air Fuel AFR Gauge, 1x Narrowband Oxygen Sensor, 1x English Manual. Please contact us if you are dissatisfied with our products, the response will be taken in 24 hours and provide proper solutions.
Bestseller No. 9 
Auto Meter 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in.
- 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
- Suitable for use with gasoline powered engines
- Digital segment display and LED radial bar graph display
- 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system
Bestseller No. 10 
ARTILAURA 2-1/16" 52mm Air/Fuel Ratio Gauge LED Digital Display with Narrowband O2 Oxygen Sensor Car Gauge for 12V Car
- 🚗【Function】Numbers clearly show, LED backlit for easy reading in the darkness.
- 🚗【Range】 2-1/16" (52mm) gauge with black dial. Air/Fuel Ratio readings from 10.00 to 20.00 AFR.
- 🚗【Applicability】Air Fuel Ratio gauge compatible for 12 volt car. High sensitivity and easy operation.
- ✅【Oxygen Sensor】Oxygen Sensor OEM:0258006028, Working Voltage: DC12V, Spiral: M18*1.5, Use Wrench: 22mm, Output Voltage: Maximum value ≥900mv/ minimum value ≤50mv.
- ⭐⭐⭐⭐⭐［After-Sale Guarantee］Includes 1x Air Fuel AFR Gauge, 1x Narrowband Oxygen Sensor, 1x English Manual. Please contact us if you are dissatisfied with our products, the response will be taken in 24 hours and provide proper solutions.
Bestseller No. 11 
GoolRC Digital Air Fuel Ratio Gauge Kit 12V 2 in 1 Meter 52MM Narrowband Car Volmeter with O2 Oxygen Sensor Car Modification Acces White cover
- 2-in-1 car meter shows the air-fuel ratio and battery voltage, accurate and easy to view.
- Made of high-quality plastics, with nice durability, strong and anti-aging.
- It can help improve vehicle performance and make driving safer.
- 52mm/2in universal gauge fits for 12.0V motorcycle, car, truck, gasoline engine.
- Easy to install and use, reliable quality, is a nice modification accessories.
SaleBestseller No. 12 
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)
【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.
【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.
【INSTALLATION】Thanks to the 52mm housing of the wideband gauge, you can install it almost wherever feasible. Plug and play, very convenient. In order to help you understand the accessories and installation details, we have provided an installation instruction in the package.
【100% SATISFACTION SERVICE】If you have any questions or dissatisfaction, please email us and we will help you solve it perfectly - 24 Months Warranty & 24 Hours Service.
Bestseller No. 13 
ESUPPORT Car 2" 52mm Air Fuel Ratio Gauge
- Diameter: 2"/52mm.
- Red LED illuminated needles.
- LED super white display.
- Air/Fuel Ratio Gauge
- Power: DC(10-15V) 12V Professional.
Bestseller No. 14 
GlowShift Black 7 Color Digital Wideband Air / Fuel Ratio AFR Gauge Kit - Includes Oxygen Sensor, Data Logging Output & Weld-in Bung - Multi-Color LED Display - Clear Lens - 2-1/16" 52mm
- GlowShift Black 7 Color Series Digital Wideband Air/Fuel Ratio Gauge is Essential for Tuning & Mapping Out the Air to Fuel Ratios of Your Gasoline or E85 FlexFuel Performance Vehicle
- Gasoline Wideband Air/Fuel Ratio Readings from 10.00 to 20.00 AFR - E85 Wideband Air/Fuel Ratio Readings from 6.00 to 12.00 AFR- 2-1/16" (52mm) Gauge with Black Dial, Clear Lens & 7 Color Digital Display
- 7 Solid Color Modes & 2 Color Cycle Modes Allow You to Match Your Factory Dashboard Lights or Add a Custom Style to the Interior of Your Vehicle - Colors Include Blue, Red, Green, Teal, Purple, White & Yellow - Connecting the Dimmer Wire to the Headlight Switch Reduces Brightness of the Gauge by 30% When the Headlights are On
- Includes 4.9 LSU Wideband Oxygen Sensor, Weld-In Bung, Control Box, 10' Sensor Harness, 7' Gauge to Control Box Harness, 5' Power Harness, 3' Data Logging Wire, Gauge Visor, Mounting Hardware & Installation Instructions
- GlowShift Guarantee with One Year Limited Warranty & Free Lifetime Technical Support
SaleBestseller No. 15 
AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge
- The X-Series wideband UEGO AFR sensor controller gauge (PN 30-0300) features a modern, visually striking faceplate and new seven-segment, center display that is 87% larger than the 30-4110 AEM
- The gauge includes a 0-5v and RS232 Serial Port output for feedback control and data logging, and an AEMnet (CANbus) output for data logging
- X-Digital wideband technology gives these controllers the ability to read and report values that other controllers do not, which can deliver more optimized engine tuning and a safer overall operating condition
- Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune
- When tuning an engine using wideband AFR feedback control on an inertia dyno, dead time affects the data you are looking at because it is reported in a different operating location than when it actually occurred
Bestseller No. 16 
Dyno Racing 52mm Car Air Fuel Ratio gauge Electrical Digital Air Fuel Ratio Meter Narrowband Smoken Lens Car Gauge
- 52mm Gauge Digital Volt & Digital LED Air Fuel Ratio
- AFR Readout: Between 20-10 AFR.Volt Reads Between 8 - 16 Volts, for 4/6/8 Cylinder Gasoline Cars
- Warning(Red Light):At start, the voltage is lower than 11.0V,the value of AIR/FUEL is lower than 0.8 or higher than 10BAR(lower than 12 or higher than 120PSI).
- Easily display at night:Our gauge is highly visible with a blue digital LED,easy viewing at all angles during any lighting conditions.
- Volt Reads Between 8 - 16 Volts, for 4/6/8 Cylinder Gasoline Cars
SaleBestseller No. 17 
52mm Car Air Fuel Ratio Gauge LED Blue Digital AFR Gauge Kit for 12V 4/6/8 Cylinder Gasoline Vehicle Digital Air Fuel Ratio AFR Gauge Kit
- 【Air/Fuel Ratio Gauge】Safe and high‑quality plastic material, not easy to damage the car, avoid unnecessary losses. Car air fuel ratio gauge is an indispensable accessory for cars to ensure its normal operation.
- 【Wide Fit】Suitable for 12V, 4 / 6 / 8 cylinder and gasoline vehicle. Add the look and feel of a racing car to your riding, with light weight.
- 【Installation Note】Easy installation using English user manual, professional installation is strongly recommended. Red wire is connected to positive pole, black wire is connected to negative pole, red wire and yellow wire is connected to light source wire, green wire is connected to signal wire.
- 【Direct Analog】Perfect match for the original car. Can directly replace the broken or shabby one.
- 【Worry Free】We are committed to create the best product service for each customer and Provide the Quality Assurance and the Money Back Guarantee to ensure that you can buy it without any concern, If this product does not meet your expectations, please feel free to contact us, we will try the best to deal with till you satisfied.
SaleBestseller No. 18 
GlowShift Tinted 7 Color Narrowband Air / Fuel Ratio AFR Gauge - Lean, Optimal & Rich Readings - Black Dial - Smoked Lens - 2-1/16" 52mm
- GlowShift Tinted 7 Color Series Narrowband Air/Fuel Ratio Gauge Monitors & Displays Your Engine's Air to Fuel Mixture by Reading the Voltage Output of a Narrowband Oxygen Sensor
- Narrowband Air/Fuel Ratio Readings from Lean, Optimal & Rich Mixtures - 2-1/16" (52mm) Gauge with Black Dial, Tinted Lens & Illuminated Red Needle
- 7 Solid Color Modes & 2 Color Cycle Modes Allow You to Match Your Factory Dashboard Lights or Add a Custom Style to the Interior of Your Vehicle - Colors Include Blue, Red, Green, Teal, Purple, White & Yellow - Connecting the Dimmer Wire to the Headlight Switch Reduces Brightness of the Gauge by 30% When the Headlights are On
- Includes 2' Power Harness with 6' Sensor Lead Wire, Gauge Visor, Mounting Hardware & Installation Instructions
- GlowShift Guarantee with One Year Limited Warranty & Free Lifetime Technical Support
Bestseller No. 19 
SUPERFASTRACING Black Universal Adjustable Fuel Pressure Regulator Gauge 0-100psi Liquid Chrome
- 1 x Fuel Pressure Regulator Gauge , 1-3/4'' | 45mm Gauge
- Liquid filled gauge for consistent readings hot or cold. Adjustable from 0 to 100 PSI to maximum fuel pump capacity
- Steel case, a crisp, easy to read black face with white numerals and PSI increments
- Standard, 1/8 inch NPT male supports a direct connection to any adjustable regulator
- Easy-Vent Plug for accurate readings every time.
Bestseller No. 20 
GlowShift 10 Color Digital Narrowband Air/Fuel Ratio Gauge - Multi-Color LED Display - Tinted Lens - 2-1/16" (52mm)
- GlowShift 10 Color Digital Series Narrowband Air/Fuel Ratio Gauge Monitors & Displays Your Engine's Air to Fuel Mixture by Reading the Voltage Output of a Narrowband Oxygen Sensor
- Narrowband Air/Fuel Ratio Readings from 10.0 to 20.0 AFR - 2-1/16" (52mm) Gauge with Digital Display & Tinted Lens
- Quick-Glance & Easy to Read Digital Display - 10 Solid Color Modes & 2 Color Cycle Modes - Self-Calibration at Startup Ensures that the Gauge is Performing Optimally
- Includes 2' Power/Sensor Harness, Gauge Visor, Mounting Hardware & Installation Instructions
- GlowShift Guarantee with One Year Limited Warranty & Free Lifetime Technical Support
Last update on 2023-01-12 / Affiliate links / Images from Amazon Product Advertising API