Are you running rich or lean? Innovate oxygen sensors will monitor and tell you just what the facts are. These precision sensors collect and feed the data you need to aid in restoring accurate gauging your fuel mixture. They offer replacement Bosch LSU 4.2 and 4.9 sensors for their digital A/F ratio meter and digital wideband gauges. Plus, Innovate wideband systems allow the sensor to be recalibrated for the ultimate in accuracy, maximum performance, and safety!