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 Nissan Frontier Forums : Problems / Technical
Subject Topic: Left side exhaust manifold/catalytic conv Post ReplyPost New Topic
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Posted: Jun 29 2019 at 6:19pm | IP Logged Quote Jdayw/a04

I replaced both manifold/cat with after market Magna flow. Big mistake.
They didnít mate up properly. Iíve just recently purchased a Dorman
OEM direct replacement part. Right side ,no problems. Left side on the
other hand great install. Problem is the 02 sensor hole is too big.
Any ideas or other products that are OEM or direct fit w/ the correct
sized 02 hole?
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Posted: Jul 21 2019 at 6:52pm | IP Logged Quote frontierguy

You may need a "BUNG" which will screw into the manifold
and the sensor will then screw into the bung, a lot of
the older Nissans did this, the sensors did not screw
directly into the manifold.

08 Frontier SE KC 4X4 6speed
'10 Altima SL

Nissan Technician 25 + years
2011 John Deere X720SE
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