whats the size of the thread on a O2 sensor?

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Nov 27, 2002 | 07:16 PM

42NightZ28

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From: IL Western Burbs of Chicago

whats the size of the thread on a O2 sensor?

I want to remove my rear O2s and but bolts in there place but i don't know the size?

Nov 28, 2002 | 08:58 AM

J&JsTA

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From: Whitby Ont Canada

Re: whats the size of the thread on a O2 sensor?

I wanted to do the same thing but never did find out the size. I simply went to the GM parts counter and bought the plugs they make for this purpose. There's one plug that fits many GM vehicle applications as it is a standard thread, I don't have the part number sorry <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

Nov 28, 2002 | 09:54 AM

wrencher

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From: Chicagoland

Re: whats the size of the thread on a O2 sensor?

It's 18 mm thread like the larger spark plug thread size. If you had too you can use a old plug to plug the hole.

Nov 28, 2002 | 10:37 PM

68LSS1

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From: Tampa, Florida

Re: whats the size of the thread on a O2 sensor?

I was just looking through LPE stuff on their website and came across some stainless plugs they sell for this. Part # LN0055P and they're $4.95 each.

Nov 29, 2002 | 05:38 PM

eallanboggs

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From: New Orleans

Re: whats the size of the thread on a O2 sensor?

Have we ever heard of a vernier caliper and a thread pitch gauge class? I guess not. Preferrably one in metric units

Nov 29, 2002 | 05:40 PM

wizkid

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Re: whats the size of the thread on a O2 sensor?

I just went to NAPA and got some 18mm ford spark plugs and screwed them in. Works perfect and gets a ton of looks when ever someone is underneathe the car. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Eric

Nov 29, 2002 | 10:35 PM

XLR8NSS

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From: Deep in the seedy underworld of Koonerville

Re: whats the size of the thread on a O2 sensor?

Yep, 18mm * 1.5

I had to find a tap for a weld-on bung that, UHHHH...got a little hot welding it on. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

I think Thunder Racing sells plugs for the bungs. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

John