AEM 30-2355-XXX No-Weld O2 Sensor Mount - Manual (Page 2)

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The AEM No-Weld O2 Sensor Mount has been pressure tested to over ten times OEM exhaust backpressure
specifications. On a well designed turbocharged exhaust system the exhaust back pressure after the turbo will
be less than 3 PSI. The No-Weld O2 Sensor Mount has been pressure tested to assure there are no leaks
even at pressures over 50 PSI! To see a video demonstration of the test please visit
http://www.aemelectronics.com/no-weld-o2-sensor-mount-2-inch-660 .
The AEM No Weld O2 Sensor Mount’s clamp band is constructed from 304 stainless steel with high carbon
steel hardware. The gasket is constructed of a graphite material with a stainless steel cleat-punched foil
support that is heat resistant up to 2500 degrees F. The gasket has an adhesive backing to facilitate easy
installation.
Before installing this kit thread your O2 sensor BY HAND into and back out of the sensor fitting on the clamp
band. Make sure there is very little resistance to threading into the fitting.
1. Locate a suitable place in the exhaust system to install the No-Weld O2 Sensor Mount. The mounting
location must be on a straight section of the exhaust system free of bends for at least 2”.
On Non-Turbocharged Engines mount the O2 sensor in the exhaust system at least 18 inches
downstream from the exhaust port. On turbocharged engines the O2 sensor must be installed after the
turbocharger, ideally, at least 18” downstream from the turbocharger exhaust housing.
NOTE: If the sensor is mounted before the turbocharger the pressure differential will greatly affect the
accuracy of the unit. For accurate readings, the sensor must be mounted before catalytic converters
and/or auxiliary air pumps. To prevent collection of liquids between the sensor housing and sensor
element during the cold start phase, the installation angle should be inclined at least 10° from horizontal
with the electrical connection upwards, see image below.
Drill a 13/16” – 7/8” hole where the O2 sensor is to be used.
2. Thoroughly clean the area around the exhaust pipe where the O2 sensor mount will be installed.
Step 1) Take the gasket strip with the hole in it, peel off the backing to expose the adhesive and position
the gasket over the hole and apply pressure to stick the gasket to the exhaust tube. Note: The adhesive
backed gasket is a ONE TIME use part so make sure positioning is correct.
Step 2) Take the second strip of gasket and DO NOT remove the backing! Line up the end of the blank
gasket to the end of the gasket with the hole and wrap it around the pipe until it meets the opposite end of
the gasket. Scribe a line where the two gaskets overlap. Note: For the 3.0” and 3.5” kits the gasket will not
overlap but leave a gap.
Step 3) Cut off the excess gasket material so that the ends of the gasket do not overlap.
Step 4) Remove the backing from the blank gasket and apply it to the tube.