Description A genuine replacement Bosch wideband sensor for the newer AEM wideband kits including the 30-4110, 30-0300, 30-0330 and other X series types. Avoid the cheap, fake sensors you might find on auction sites. They are cheaply produced Chinese versions. Please note: This sensor is not the same as the more common 7057 style sensor. If you require a sensor for your Zeitronix, Innovate, Tech Edge kit then please look at our “7057” wideband sensor in the sensors category.