Exhaust got hot when my impileer went bad and melted the rubber couplers. Where do I get new ones? Can I get it from hardware store or is it from a marina

if the exhaust is going through the hull you can use what ever size the current tubing is but in soft wall exhaust hose..if its going through a y-pipe then you will need to get the merc or sierra ones..

They hook up to my silent choice exhaust

if they go to the upper part of the silent choice then use 4''? soft wall exhaust hose,,the ones that go to the silent choice to the y-pipe will have to be oe merc or sierra

I got some off of ebay, turned out to be same brand as the ones I had.

Got mine on ebay as well

you can go to any auto store that sells Gates brand rubber hoses and belts---its called green stripe hose...probally 4in for your application --that runs about 25$ a foot....its Hi heat, hi temp spiral wired straight hose.