Need Thread Size of O2 Sensor...
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Pro
Joined: Jul 2002
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From: Lynchburg VA
Need Thread Size of O2 Sensor...
Can anyone tell me the thread size of the stock O2 sensors (after the cats) on an LT1/LT4? I need to buy a plug for my Corsa system for when I do my LT header install.
Also, where might I buy a stainless plug? ( I see a few on Summit.)
Thanks in advance,
David
Also, where might I buy a stainless plug? ( I see a few on Summit.)
Thanks in advance,
David
Last edited by DCP; Dec 8, 2007 at 10:20 AM.
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It's 18mm just like the old style, larger spark plugs. You can use one of them for a plug if you want! 
You can get an 18mm universal replacement oil pan plug and it'll fit perfectly too, that's what I use. It was a couple of bucks at Autozone.
You can get an 18mm universal replacement oil pan plug and it'll fit perfectly too, that's what I use. It was a couple of bucks at Autozone.
Thread Starter
Pro
Joined: Jul 2002
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From: Lynchburg VA
