Those whom work on Duramax's know its very common to struggle with intercooler and downpipe clamps. Often, the lock nuts are ruined during removal which ultimately renders the clamp junk.
Merchant has a solution. These HD stainless nuts have 3 times the thread engagement to help repurpose used clamps and improve new clamps. These are a favorite in our shop for downpipe clamps.
Sold individually, fits most GM and Aftermarket Clamps.
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