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Vivid Racing Gear 
AutoMeter 4778 Pro Wideband Air/Fuel Ratio Gauge
Achieving the perfect air/fuel mixture is essential for maximizing your engine's performance and longevity. The AutoMeter 4778 Pro Wideband Air/Fuel Ratio Gauge stands out in a crowded market of wideband gauges, thanks to its innovative calibration method. This gauge automatically calibrates each time you start your engine, ensuring consistent accuracy throughout the life of your sensor—no free air calibration required.
Designed to be compatible with nearly all fuel types, this gauge features a configurable display that allows you to monitor the specific range you want. Whether you're on the track or cruising the streets, the advanced peak recall function and lean warning system keep you informed and safe while making power. The automatically dimming display adjusts to various lighting conditions, providing optimal visibility at all times.
Installation is a breeze with the included specially designed O2 sensor and wiring harness. With data logging output available for both one-wire and two-wire systems, you can choose between lambda or AFR readings. Simply put, the AutoMeter 4778 Pro Wideband Gauge is the most accurate and user-friendly wideband gauge on the market today.
Key Specifications
Gauge Size: 2-1/16 in. (52.4mm)
AFR Range: 6:1 - 20:1
Features: Peak/Warn
Face Color: Carbon Fiber
Features
- Bezel Color: Bright Anodized
- Bezel Style: Super Bezel
- Gauge Type: Wideband Air/Fuel Ratio (AFR)
- Lens: Flat Clear
- Lighting Color: Red LCD/Red Yellow Green Segments
- Lighting Type: Digital LED
- Movement Type: Digital
- Outer Bezel Diameter: 2.250 in.
- Size: 2.3125 in.
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This product can expose you to chemicals known to the State of California to cause cancer. For more information, visit www.p65warnings.ca.gov.
Notes:
Universal Fitment: This gauge is designed for universal fitment, making it suitable for a variety of vehicles. It is recommended to verify compatibility with your specific application to ensure optimal performance.
Customer Insights
Users appreciate the ease of installation and the precision of the gauge, noting that it provides real-time feedback that is crucial for tuning their vehicles. Many find the peak recall feature invaluable for track days, as it helps them monitor performance under high-stress conditions. The gauge's sleek carbon fiber design also garners positive remarks for its aesthetic appeal, seamlessly integrating into any dashboard setup.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
AutoMeter is an aftermarket company that started in 1957. The company specializes in creating high precision gauges for various automobiles. The company was founded by Vern Westberg and initially poured sand castings in their family’s backyard. Today, Autometer is considered the leading brand when it comes to vehicle instrumentations and is being used by a lot of enthusiasts worldwide.
Experts in their FieldWith more than 60 years in the industry, the company was able to perfect its craft and developed many industry-changing products such as rev control and quick responding tachometers. They also offer an LCD Competiton data acquisition system for those who are more serious when it comes to data monitoring.
State-of-the-art FacilityAutometer has one of the industry’s most advanced manufacturing facilities based in Sycamore, IL USA. This, coupled with an advanced engineering system allows them to create parts that are durable, accurate, and precise. The company is ISO certified so you can be sure that you get quality products consistently.
Autometer has its own High-Performance division that focuses on competition spec and racing electronics and instrumentations. Using their experience, they are able to develop and continuously improve their products and adapt them to the ever-changing automotive technology.
Purchase Autometer at Vivid RacingIf you want to accurately monitor your engine’s vitals, then upgrade your gauges to Autometer. They have been the trusted brand of many enthusiasts and racers worldwide and have proven themselves as the leading brand in the industry. To know more, visit Vivid Racing and check out their list of products that would fit your specific requirement.
Installation Instructions
Click to view the Installation Instructions here
