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Re: Oxygen Sensor Replacement-'little sleeves' Posted by Roger D [Email] ![]() ![]() In Reply to: Re: Oxygen Sensor Replacement, GaryH, Sun, 2 Jan 2022 12:23:41 Members do not see ads below this line. - Help Keep This Site Online - Signup |
There are 2 little internal sleeves at the base of the long studs. They fit into a recess of the elbow. Their connection to your difficulty is just that they offer additional surface area down there that can increase the stiction from just a little corrosion. I personally like Knock 'er Loose penetrant by K&W. There isn't a gasket there. Way back in the 60's Mopar big block exhaust manifolds bolted directly to the cast-iron heads. An old time mechanic used black grease on that joint. He said after the grease burned out it would leave a little carbon residue that would help seal the joint.
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