300300 Wideband UEGO Air Fuel Ratio Gauge Kit X Series 2 1/16 AFR O2 Sensor
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Equipment Fitment
Review the equipment and model information below. Fitment can vary by serial number, production date, or machine configuration, so confirm your model and reference numbers before ordering.
Product Overview
Key Features & Performance
- X-series digital controller with ultra-fast sampling for true wideband AFR accuracy
- 2-1/16" (52mm) gauge with bright LED display and configurable backlighting
- Includes genuine Bosch LSU 4.9 wideband O2 sensor for long-term reliability
- 0-5V analog output enables seamless data logging and ECU integration
- Free-air automatic calibration simplifies sensor setup and maintenance
- Supports AFR range from 8.0:1 to 20.0:1 for gasoline, ethanol blends, and race fuels
Common Uses
- Street and track performance tuning for naturally aspirated and forced induction engines
- Real-time monitoring of air/fuel ratios on turbocharged and supercharged setups
- ECU calibration and standalone engine management integration
- Diagnostic tool for detecting lean/rich conditions during tuning sessions
Technical Specifications
- Part Number(s): 30-0300
- Gauge Size: 2-1/16" (52mm)
- Sensor Type: Bosch LSU 4.9 Wideband O2 Sensor
- Display: Digital LED with configurable backlight
- Analog Output: 0-5V Linear
- AFR Range: 8.0:1 – 20.0:1 (Gasoline)
Frequently Asked Questions
Q: Does this kit include the oxygen sensor and all wiring? A: Yes, it comes with a genuine Bosch LSU 4.9 wideband sensor, wiring harness, and all mounting hardware.
Q: Can I replace my factory narrowband O2 sensor with this wideband gauge? A: No, this gauge is a standalone AFR monitor and does not emulate a narrowband signal; a separate bung should be welded for the sensor.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.