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Review on ⚙️ Sierra International MP39190 Weatherproof Thread Boot Nut, Size 13/16"-16, for Polyester Ignition Switches 1996 and Beyond by Mike Bucher

Revainrating 5 out of 5

Seals in water

Because my boat's ignition switch is located on the beveled corner of the center console, it was exposed to rainwater etc. which corroded the switch's internal contacts. WD40 and switch operation would fix it, but the problem would come back. The switch was replaced last year. I bought this trunk nut and the problem is solved!

Pros
  • Best
Cons
  • Not bad, but...