Grams 52mm Wideband Gauge

Grams 52mm Wideband Gauge

Precise Air-Fuel Ratio Monitoring with Bosch Sensor

Keep your engine running at peak performance with the Grams 52mm Wideband Air-Fuel Ratio Gauge. This compact, high-quality gauge features an LED display and includes the trusted Bosch LSU 4.9 sensor, ensuring highly accurate readings across a 10:1 to 20:1 AFR range.

With its 0–5V analog output, it's perfect for integration with standalone ECUs or data loggers. The gauge lights up in red, yellow, or green depending on AFR levels giving you instant visual feedback.

Ideal for tuners and performance setups, this gauge is built to deliver reliability and precision.

Technical Specs
Diameter: 52 mm
Sensor: Bosch LSU 4.9 included with weld bung
Output: 0–5V analog (10–20 AFR)
Display Range: 10.0 to 20.0 AFR
LED Display Colors: Red, Yellow, Green

Features
Compact 52mm design for tight spaces
Digital wideband air/fuel ratio gauge
3-color LED feedback system
Includes high-accuracy Bosch sensor
Weld bung included for installation
Compatible with ECU/data logging systems