AEM X-Series Wideband UEGO AFR Sensor Controller Gauge s4b8.5 NGK Iridium technology represents one

NGK Iridium technology represents one of the highest standards in modern spark plug engineering

the latest BMW M240i delivers a thrilling driving experience

We’ve driven them in every real-world situation you’re likely to encounter

Note: The 'To Standard Fitment' fits to O/E Cat Back only

AEM X-Series Wideband UEGO AFR Sensor Controller Gauge s4b8.5 NGK Iridium technology represents oneAEM X Series Wideband UEGO AFR Sensor Controller Gauge with X Digital Technology. Includes: X Series Wideband Controller Gauge, Bosch LSU 4. 9 Sensor, Wiring Harnesses, Black Bezel, Black AFR Lambda Faceplate & O2 Sensor Bung AEMs X Series Wideband UEGO Air Fuel Ratio Sensor Controller Gauges are built upon unique, patented 100% Digital technology (Patent 9,575,030) that makes them the fastest responding wideband air fuel ratio controllers in