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AEM/FAE replacement wideband oxygen sensor compatible with AEM part #30‑0300, offered as a direct replacement option. Rated for use with unleaded and leaded race fuels, this sensor is listed as a replacement for 0300 units with 0400 serials and is noted for improved durability over Bosch 4.9 sensors and faster response time to support accurate wideband controller readings.
AEM FAE Wideband Uego Replacement Sensor
