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Old 06-20-2009, 03:18 AM   #1
Scooby Newbie
Member#: 180912
Join Date: May 2008
Chapter/Region: SCIC
Location: SoCal
2004 WRX

Default Brand new A/F sensor with antiseize on it? Safe to use?

I just received a brand new A/F sensor (front O2 sensor w/e you want to call it) from subaru; first of all there was antiseize already brushed on to the threads but then there was a little plastic sheath or guard that was around the threaded section that had come off during shipping, and a healthy coating of the antiseize was on the inside of that shield and smeared across the sensor itself when it came off. There was none in the little holes on the outside of the sensor just streaks here and there on the flat parts as far as I could see.

In the service manual it specifies quite clearly that you can not get any antiseize on the sensor itself.

Is it safe to use (if I clean it off somehow) or do I have to wait another month to ship it back, verify the damage and wait for a replacement?

on a side note am I the only one who thinks that putting antiseize on anything pre-delivery to the customer is 8/10 on the dum-dum scale?
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Old 06-20-2009, 11:36 AM   #2
Scooby Newbie
Member#: 158586
Join Date: Sep 2007
Chapter/Region: MWSOC
Location: North Dakota, USA
2009 WRX
Pearl White


Don't use it, every bit of contamination will affect it's performance.
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Old 06-21-2009, 09:19 PM   #3
Scooby Newbie
Member#: 99653
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: NNJ
05 WRX


It'll be fine, almost all denso A/F sensors that screw in have anti-seize on them.
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