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**FirstOwner69** · 10-17-2019, 09:46 PM

I have them on my truck, primarily because they were original to the truck. However, they should eliminate the possibility of the bolts loosening.

10-17-2019, 09:46 PM	#4
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,839	Re: French locks for exhaust manifolds I have them on my truck, primarily because they were original to the truck. However, they should eliminate the possibility of the bolts loosening.