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30-0300 Wideband UEGO AFR Gauge Kit52mm Air Fuel Ratio Gauge Kit with Wideband O2 Sensor for Performance TuningReference No.30-0300Gauge Size52mm / 2-1/16"Display TypeDigital AFRApplicationUniversalProduct Overview
This wideband UEGO AFR gauge kit is designed for performance tuning, air fuel ratio monitoring and custom engine setup applications. It allows the driver or tuner to monitor air fuel ratio changes through a 52mm digital gauge display.
The kit includes the gauge, wideband oxygen sensor, wiring harnesses and installation accessories shown in the product pictures. It is commonly used for EFI, carbureted, turbocharged, supercharged and naturally aspirated tuning setups.
✓ Wideband AFR MonitoringHelps monitor real-time air fuel ratio changes during tuning and driving conditions.✓ 52mm Gauge SizeStandard 52mm / 2-1/16 inch size for many gauge pods and dashboard mounting locations.✓ Wideband O2 Sensor IncludedIncludes the wideband oxygen sensor and sensor harness shown in the product images.✓ Universal Performance UseSuitable for custom tuning setups when wiring, sensor placement and gauge mounting are confirmed.SpecificationsProduct TypeWideband UEGO AFR Gauge Kit / Air Fuel Ratio Gauge KitReference Part Number30-0300 / 300300Gauge Diameter52mm / 2-1/16 inchSensor TypeWideband Oxygen Sensor Based AFR MonitoringDisplayDigital Air Fuel Ratio DisplayApplicationUniversal Performance / Custom Tuning ApplicationImportant Fitment & Installation Warning
This item is a wideband AFR gauge kit. It is not a direct vehicle-specific oxygen sensor replacement and does not simply replace a factory narrowband O2 sensor.
Please confirm the 30-0300 reference number, 52mm gauge size, wiring layout, sensor connector, gauge mounting space and exhaust sensor installation location before purchase.
Proper sensor placement is critical for accurate readings. Do not install the sensor where it may be exposed to heavy condensation, impact, oil contamination, coolant contamination, exhaust leaks or excessive heat.
Professional installation and proper tuning knowledge are strongly recommended. Incorrect wiring or sensor placement may cause inaccurate AFR readings or sensor failure.
Installation NotesRead the instruction manual before wiring or installing the sensor.Confirm the 52mm gauge fits your gauge pod or dashboard mounting location.Make sure power, ground, signal and harness connections are secure.Recheck wiring, sensor position and exhaust leaks if the gauge does not read correctly.Package Includes1 x Wideband AFR Gauge1 x Wideband Oxygen SensorWiring Harnesses as shownMounting Bung / Nut and O-Ring as shownButt Connectors and Small Hardware as shownInstruction Manual and Box as shownFITMENTSUniversal Performance ApplicationFor EFI, carbureted, turbocharged, supercharged or naturally aspirated tuning setups requiring a compatible wideband AFR gauge and oxygen sensor installation.Gauge MountingFits many 52mm / 2-1/16 inch gauge pods or custom dashboard mounting locations. Please confirm available mounting space before purchase.Fitment Note: Universal application does not mean plug-and-play for every vehicle. Please confirm wiring requirements, sensor location, exhaust bung placement, gauge mounting space and tuning setup before ordering.
On Aug 3, 2026 at 19:59:24 PDT, seller added the following information:
