AEM 30-2355-XXX No-Weld O2 Sensor Mount User Manual

! WARNING

Installation Instructions for:

No-Weld O2

Sensor Mount

Part Numbers:

30-2355-200 – 1.75” to 2.0” tube
30-2355-250 – 2.25” to 2.5” tube
30-2355-300 – 2.75” to 3.0” tube
30-2355-350 – 3.25” to 3.5” tube

Please read and understand these instructions BEFORE attempting to install this product.

ADVANCED ENGINE MANAGEMENT INC.

2205 126TH Street, Unit A Hawthorne, CA. 90250

Phone: [phone] Fax: [phone]

www.aemelectronics.com

Part Number: 10-2355 Rev B

 Copyright 2010

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.

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Step 1 Step 2

Step 3 Step 4

Gasket applied to tube

3. Open the clamp band and position the O2 fitting over the hole and ensure the boss inserts into the hole.
Assemble the end blocks, center block, bolts washers and nuts as shown in the diagram. Please note;
on 2.25”, 2.75” & 3.25” pipes the center block is not used. Tighten the nuts evenly until you
achieve 10 lbs./ft. torque.

4. Install your O2 sensor into the fitting taking care not to damage the tip of the sensor. When tightening
the O2 sensor into the No-Weld O2 Sensor Mount, be sure to hold the 1” (25mm) hex fitting in place
with a second wrench so it does not slip or have any twisting forces placed on it.

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Warranty

Advanced Engine Management, Inc. warrants to the consumer that all AEM High Performance products will be free from defects in
material and workmanship for a period of twelve (12) months from date of the original purchase. Products that fail within this 12 month
warranty period will be repaired or replaced at AEM’s option, when determined by AEM that the product failed due to defects in material
or workmanship.

This warranty is limited to the repair or replacement of the AEM part. In no event shall this warranty exceed the original purchase price
of the AEM part nor shall AEM be responsible for special, incidental or consequential damages or cost incurred due to the failure of this
product.

Warranty claims to AEM must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only
to the original purchaser of product and is non-transferable. All implied warranties shall be limited in duration to the said 12 month
warranty period. Improper use or installation, accident, abuse, unauthorized repairs or alterations voids this warranty.

An AEM Warranty Claim Form Must Accompany All Warranty Claims. Products returned to AEM with no Return Goods

Authorization and or No Warranty Claim Form may be rejected and returned to sender.

AEM disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by
AEM. Warranty returns will only be accepted be AEM when accompanied by a valid Return Goods Authorization (RGA) number. Credit
for defective products will be issued pending inspection. Product must be received by AEM within 30 days of the date RGA was issued.

A copy of the AEM Warranty Claim Form can be e-mailed or faxed by contacting [phone] and ask for Warranty/Claims

Department.

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