Wideband AFR Gauge Kits for Petrol, E85 & Diesel Performance Builds

Looking for a high-performance wideband gauge? You’ve come to the right place. In this section, you’ll find our complete range of wideband AFR gauge kits, wideband controllers, and high-quality O2 sensors designed for everything from daily street cars to full track builds.

Whether you're monitoring the tune from your dyno shop or dialling in your own setup at home with a carburetted engine, we offer wideband solutions to suit all setups, petrol, E85, and diesel. We even stock rare options like the Spartan 3D, one of the few widebands developed specifically for diesel performance tuning.

Need CAN integration? We’ve got that covered too. Our CAN enabled wideband kits can connect directly to aftermarket ECUs like Haltech, Link, and Megasquirt, transmitting AFR data over CAN or analog output for seamless tuning and closed-loop fuel control.

We offer wideband kits with your choice of:

• The JRP 4.9 sensor – our in-house developed model
• The trusted Bosch 4.9 motorsport sensor
• The next-gen Bosch ADV sensor – rarely seen in retail wideband kits

Wideband gauges are essential for any performance setup. Without one, you're tuning blind. If you've modified your engine on a stock ECU, or upgraded to a standalone ECU, an accurate wideband is critical to ensure safe AFR under all conditions.

At JRP, we’re proud to deliver world-class wideband solutions that rival and often outperform big name brands, without the inflated price tag. From street builds to high-end CAN-based setups, we have a wideband kit that’s right for you.