AEM Bosch Wideband LSU 4.9 UEGO O2 sensor. This kit includes a Bosch 4.9LSU sensor for use with the AEM Digital Wideband Air/Fuel Gauge PN:30-4110. Bosch LSU 4.2 Wideband Sensor. The 4.9 sensor, AEM PN:30-2004 withNOT work with other AEM wideband devices or AEM ECUs.
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