14 in 1 Spartan 3D lite diesel wideband controller and Bosch 4.9 Oxygen Sensor

Many of our diesel customers who own the JRP 14in1 multi gauge have asked for it—and now we’ve delivered. We’re proud to introduce the Spartan 3D Lite Diesel Wideband Controller, specifically designed to work with our JRP 14in1 multi gauge systems.

This powerful little wideband allows diesel vehicle owners to monitor air-fuel ratios directly on their 14in1 display, using an expanded AFR range that diesel tuning requires. Most wideband products on the market are tailored for petrol engines, typically offering a limited AFR range of 10–20. While that’s suitable for petrol applications, it’s too narrow for diesel tuning. The Spartan 3D Lite, on the other hand, is configured with a wide 10–40 AFR range—perfect for accurate diesel monitoring.

If you’re planning to purchase one of our 14in1 multi gauge systems for your diesel vehicle and want more precise tuning beyond just using EGT readings, this wideband controller is the perfect addition. It integrates seamlessly with the 14in1 system and provides real-time AFR data on-screen.

For those who aren’t using our 14in1 system but still want to monitor diesel AFR, we also offer standalone diesel wideband kits. These kits include the Spartan 3D Lite wideband controller, a Bosch O2 sensor, and a 52mm LCD air-fuel ratio gauge—ideal for anyone needing dedicated diesel AFR monitoring without the full multi-gauge setup.

Below, we go into more detail about the quality and features of 14Point7’s wideband controllers, including specifics on the Spartan 3D Lite Diesel model. We’ve proudly been 14Point7’s official distributor in Australia for years, with thousands of Spartan 2 units running reliably in vehicles across the country. In that time, the number of faulty or DOA units has been remarkably low—a true testament to the engineering, design, and quality control behind these products.

The Spartan 3D Lite continues that legacy of reliability. It’s tough, well-built, and ready for long-term use. If you’re looking to level up your diesel tuning, this wideband controller is an excellent choice to pair with your 14in1 multi gauge system.

So without further ado, scroll down to explore the features and specifications of this outstanding diesel wideband controller.