30-0300 Wideband AFR Gauge- Air Fuel Ratio AFR 52mm with 4.9 LSU Sensor Controller Gauget kit

🔧 Why a Wideband AFR Gauge Matters

Maintaining the correct air-fuel ratio is essential for both performance and engine longevity. Running too lean can cause detonation and damage pistons, while running too rich wastes fuel and fouls plugs. The 30-0300 Wideband AFR Gauge gives you the precision data you need to tune safely and effectively.

Benefits of Using a Wideband AFR Gauge:

• Optimize air-fuel mixtures for power and fuel efficiency.

• Prevent detonation and overheating in turbo/supercharged setups.

• Ensure consistency during dyno tuning and ECU remapping.

• Track performance changes in real time.

When every tenth of an AFR counts, this wideband gauge gives you the confidence to fine-tune your setup with accuracy you can trust.

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
30-0300 UEGO Air/Fuel Ratio Gauge is a broadband UEGO Air/Fuel Ratio Controller (AFR) and instrumentation in one, center display that is 87% larger than the 30-4110

💨 Bosch 4.9 LSU Sensor – Industry-Standard Accuracy

The Bosch 4.9 LSU sensor included in the 30-0300 Wideband AFR Gauge kit is one of the most accurate and durable wideband oxygen sensors available. Used by professionals worldwide, it delivers lightning-fast response and long-lasting reliability.

Its advanced design resists contamination, maintains calibration longer, and provides stable readings even under extreme heat and vibration — making it perfect for street, track, or race use.

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.

🧩 Complete Plug-and-Play Kit

The 30-0300 Wideband AFR Gauge Kit includes everything you need for installation:

• 52mm Digital AFR Gauge

• Bosch 4.9 LSU Sensor

• Integrated UEGO Controller

• Wiring harness and connectors

• Weld-on exhaust bung and hardware

Designed for universal fitment, this kit works with most vehicles using 12V power systems, making it easy to install in cars, trucks, and even motorcycles.

This air fuel ratio gauge comes with 4.9 LSU sensor, display AFR values in hundredths of a second, The readings are accurate and fast, that report precise and reliable reference to the car engine in real-time, offer more optimized engine tuning and safer overall operating conditions. Note: Free air calibration is not required when used with our Wideband O2 UEGO AFR gauge.

🌟 Technical Specifications

Notice: For any reason, if you have any questions, please feel free to contact us, we will be happy to help you

🚘 Perfect for All Performance Applications

The 30-0300 Wideband AFR Gauge is suitable for a wide range of setups, including:

• Turbocharged & Supercharged Engines – Monitor AFR under boost for safe power.

• Naturally Aspirated Builds – Tune with precision for improved throttle response.

• Diesel and Flex-Fuel Vehicles – Supports multiple fuel types with accurate readings.

• Standalone ECUs & Data Logging Systems – Fully compatible for professional tuning.

Whether you’re street tuning or running on the dyno, this kit delivers accurate, reliable AFR data to help you reach peak performance.

🧠 Why Choose the 30-0300 Wideband AFR Gauge?

✅ All-in-One Design: Integrated controller eliminates extra wiring and components.
✅ High-Speed Data Accuracy: Real-time readings with minimal lag.
✅ Universal Compatibility: Works with all fuel types and ECU systems.
✅ Easy Installation: Plug-and-play wiring for beginners and pros alike.
✅ Durability: Built to handle extreme heat, vibration, and racing conditions.

With its robust build and lab-grade accuracy, the 30-0300 Wideband AFR Gauge is a must-have tool for tuners, racers, and performance enthusiasts who demand precision and reliability.

🏁 Conclusion: Tune Smarter with the 30-0300 Wideband AFR Gauge Kit

If you want to push your car’s performance safely and efficiently, the 30-0300 Wideband UEGO Air Fuel Ratio Gauge Kit is your perfect companion. Its Bosch 4.9 LSU sensor, integrated controller, and 52mm digital display provide instant, reliable AFR feedback that helps you tune with confidence.

From dyno sessions to daily driving, this wideband gauge ensures your engine runs at its best — delivering power, efficiency, and protection with every pull.