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7/12/2017 - DOCUMENT NUMBER: 10-0300
© 2017 AEM Performance Electronics
30-0300 X-Series UEGO Gauge
P/N 35-4001 Mild Steel Sensor Bung
P/N 30-4008 Stainless Steel Tall Sensor
Bung w/ Fins
P/N 30-2355-XXX No Weld
UEGO Clamp Kit
The bung should be welded in such a way that the installed
sensor orientation is greater than ten degrees from horizontal to
allow any condensation to properly drain from the sensor. In
addition, it is recommended to avoid a completely vertical sensor
orientation to prevent overheating the sensor. Failure to heed
these recommendations may result in premature sensor failure.
Important Notes on Wideband Sensors
The sensor contains an integrated heating element and will become hot enough to produce burns, when powered, even
without the presence of exhaust gas. Sensors can remain hot enough to burn or start a fire for quite some time after
removing power -- handle with caution.
UEGO sensors are very sensitive devices that must handled and installed with care. Listed below are several
contaminants and conditions which will shorten the life of the sensor or result in outright failure. Since AEM is unable to
verify the operating conditions under which a sensor is subject, NO WARRANTY is provided for the UEGO sensor itself.
The gauge/controller is, however subject to AEM's 12 month limited warranty; please see the warranty statement at the
end of this document.
The following may damage or destroy oxygen sensors:
o Leaded (tetraethyl) fuel
o Silicone
o Oil
o Engine coolants
o Particulates, carbon (e.g. excessively rich mixtures)
o Mechanical shock (e.g. dropping a sensor on the ground)
o Thermal shock (e.g. blown head gasket)
o Extreme exhaust temperatures (Greater than 930 degC/1700 degF)
o Unheated sensor in exhaust stream. Sensors that are installed in an exhaust must be connected to a properly
functioning controller during engine operation.
Gauge Installation
Installation using supplied bracket
Installation without bracket, using rubber band
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