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*randy500* · 10-17-2019, 07:29 PM

They are mandatory of you want the manifolds to be leak and trouble free. Dont use manifold gaskets with them either. Usually the manifold needs to be surfaced for a tight seal.

10-17-2019, 07:29 PM	#2
randy500 Account Suspended Join Date: Jul 2016 Location: Tacoma, WA Posts: 6,873	Re: French locks for exhaust manifolds They are mandatory of you want the manifolds to be leak and trouble free. Dont use manifold gaskets with them either. Usually the manifold needs to be surfaced for a tight seal.