Oxygen Sensor Anti-Seize
Thread Starter
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Oxygen Sensor Anti-Seize
Looking at the service manual, it calls out GM Part # 12377953, which is a special anti-seize for O2 sensor re-installation. Does anyone know of a easily accessed substitute in case the dealer doesn't have this stuff?
Thread Starter
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
OK, resurrecting from the dead. Same question. Dealer anti-seize is $25 so looking for another alternative. The Loctite material I use on the spark plugs doesn't state sensor safe to I am apprehensive about using it. Loctite does make a copper based anti-seize for O2 sensors, but I can't find it.
Anyone find something in a national store like Autozone?
Anyone find something in a national store like Autozone?
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
I have used Permatex and NAPA anti-seize on these for years and never had a problem with removing them years later...
Here are a variety of them in different sizes. A great "tool" to have in the garage.
http://www.google.com/products?hl=en...ed=0CDsQzAMwAA
Good luck... GUSTO
Here are a variety of them in different sizes. A great "tool" to have in the garage.
http://www.google.com/products?hl=en...ed=0CDsQzAMwAA
Good luck... GUSTO
Tech Contributor
Joined: May 2008
Posts: 3,100
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Here's what GM shop manuals say about it:
"Important: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation."
I haven't seen any "sensor safe" substitutes for it either. You're probably better off using the GM compound.
"Important: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation."
I haven't seen any "sensor safe" substitutes for it either. You're probably better off using the GM compound.
Thread Starter
Team Owner
Joined: Mar 1999
Posts: 22,025
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From: At the beach in little Rhody
Loctite and Permatex list a copper anti-seize for O2 sensors. Spoke with Permatex, the compound is the same as the old Fel Pro C5A that we have at work. Plan to use this. NAPA also carries this material under their part number but provide no technical details for its use.
Tech Contributor
Joined: May 2008
Posts: 3,100
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
NAPA/Permatex (Item# 765-1674) Anti-Seize Lubricant seems like it's also suitable for use.
It states this on the backside of the container, along with some other uses: "For use on spark plug and oxygen sensor threads".
It conforms to MIL-A-907E
It states this on the backside of the container, along with some other uses: "For use on spark plug and oxygen sensor threads".
It conforms to MIL-A-907E
Thread Starter
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Yes, that's it. I have C5A which is basically the industrial call out of the same stuff.
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Tech Contributor
Joined: May 2008
Posts: 3,100
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
As long as the the compound that you used remains on the sensor threads, and does not contaminate the sensor element, it should be fine.
