I have the Hardin Marine logs and snails. My snails measure 3" ID and 3 1/2 OD. I bought 3 1/2" ID hoses from CP Performance and the exhaust hoses fits very snug. This hose is designed for only a marine exhaust Application and I would not use anything else. The only thing I would change is that I'm going to buy the bolt style hose clamps to really tighten down that connection point. It could be catastrophic if that came off out in the water.
Ps: it's easier to order the right length hose than cutting it down at home. Just a thought.
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