Bolt size for rear o2's??
03-27-2006, 11:37 AM
#2
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I think it's 18mm but I am not absolutly sure. If you have a Napa near you they will be able to get you fixed up. Just take an O2 with you and they will be able to find what you are looking for.
03-27-2006, 08:24 PM
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but an O2 would slightly restrict flow because it sticks out into the pipe, lol, just kidding, but it is true. Contact Stainless Works, ask for Al, they have the correct plugs in 304 stainless, and they have zero depth to the inside.
03-27-2006, 08:28 PM
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it's a vette, having Kooks on the car makes for a tight fit on the wiring, i'll have to match the threads, suprised nobody has the spec on the thread size?
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03-28-2006, 09:50 PM
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your right, M18x1.5, no shops around here have that size, the commercial plumbing w/h's only deal w/ npt and american
