Aeroflow Digital Wide Band Air Fuel Ratio Sensor Gauge Kit AF49-7500

Aeroflow Digital Wide Band Air Fuel Ratio Sensor Gauge Kit

The Aeroflow Performance digital Air Fuel Ratio gauge kit has been designed to provide essential protection for your engine, ensuring it does not run too lean while driving. Accurate AFR data is critical when tuning an engine. Running rich can cause a loss in power, while running too lean may result in serious engine damage. By using the Aeroflow Performance wideband AFR gauge with a 5-wire heated LSU 4.9 sensor during the tuning process, you can effectively monitor AFR levels and adjust tuning parameters to optimise them for maximum power and efficiency. This wideband gauge features a blue LCD with a digital readout in the centre and a bar-graph style LED display around the outside that changes from green (rich) to yellow (optimal) to red (lean) for immediate reference to the AFR.

Key features

• Wideband range reads from 4.2:1 to 20.0:1 AFR readings.
• Gauge to sensor cable length of 3 meters (9.84ft) for flexible installation.
• LSU sensor cable measures 980mm for easy connection.
• Compact gauge diameter of 2-1/16 inches (52mm) fits standard mounting locations.
• O2 sensor bung size of M18x1.5mm for compatibility with various exhaust systems.
• Includes LSU 4.9 wideband sensor (note: not covered under warranty).

Technical details

• Gauge diameter: 2-1/16 inches (52mm).
• Wideband sensor type: LSU 4.9.
• Gauge to sensor cable length: 3 meters (9.84ft).
• LSU sensor cable length: 980mm.
• O2 sensor bung size: M18x1.5mm.
• AFR range: 4.2:1 to 20.0:1.

Applications / fitment

This gauge kit is typically used in performance tuning applications for petrol engines.

• Ideal for automotive enthusiasts and DIY tuners.
• Compatible with race cars and performance vehicles.
• Suitable for use in off-road vehicles requiring precise AFR monitoring.
• Can be used in workshops for engine diagnostics and tuning.
• Perfect for fleet vehicles needing reliable performance assessment.

Why buy from Mick’s Gone Bush?

• Trusted Australian business focused on reliable power, auto-electrical, and service parts.
• Stock sourced from reputable distributors and brands like Aeroflow.
• Practical support for trade, off-grid, and fleet customers.
• Clear shipping, warranty, and customer service policies.
• Expertise in power products and auto-electrical solutions.

Frequently asked questions

How do I install the Aeroflow AFR gauge?

Installation involves connecting the gauge to the LSU sensor and mounting it in a suitable location. Ensure the sensor is properly fitted to the exhaust system.

What vehicles is this gauge compatible with?

This gauge is compatible with a wide range of petrol vehicles, particularly those involved in performance tuning or racing.

Can I use this gauge with diesel engines?

No, this gauge is specifically designed for petrol engines and may not provide accurate readings for diesel applications.

What should I do if the gauge shows a lean reading?

A lean reading indicates that the engine is running with too much air and not enough fuel. You should consider adjusting the fuel mixture or tuning parameters to prevent potential engine damage.

Is the LSU sensor covered under warranty?

Unfortunately, the LSU 4.9 wideband sensor is not covered under any warranty.