Wideband AFR gauge

Take control of your engine’s fuelling with the Defiant Wideband AFR Gauge—a race-focused monitoring solution designed for drivers, tuners, and performance enthusiasts who demand clear and accurate data on track.

Using a Bosch LSU 4.9 lambda sensor, the Defiant gauge provides real-time monitoring of your engine’s mixture, allowing you to keep a close eye on fuelling during testing, tuning, and competition use. View Air-Fuel Ratio (AFR), Lambda, or O₂ percentage to suit your preferred setup and tuning requirements.

Supplied as a complete installation package, the Defiant Wideband AFR Gauge includes the gauge, Bosch LSU 4.9 sensor, and wiring harness—everything needed to integrate wideband monitoring into your race or performance vehicle.

Key Features

• Real-time monitoring of AFR, Lambda, and O₂%

• Bosch LSU 4.9 wideband lambda sensor

• Clear, easy-to-read display

• Ideal for motorsport, track cars, tuning, and engine diagnostics

• Helps monitor fuelling under demanding driving conditions

• Complete kit with gauge, sensor, and wiring harness

Kit Includes

• Defiant Wideband AFR Gauge

• Bosch LSU 4.9 lambda sensor

• Wiring harness

Whether you’re fine-tuning a competition engine, carrying out track testing, or monitoring fuelling during hard driving, the Defiant Wideband AFR Gauge gives you the information you need when it matters most.