Corrugated Blue Very Hi Temperature Silicone Rubber Wet Exhaust Hose, 1.25 Inch ID, Up To PSI

Continuous operating temp tops out at 350 degrees F for this hose. That said, the silicone formula itself can handle up to 500 degrees F, so there's real headroom built in. For a warm-running diesel inboard, that kind of thermal tolerance makes a significant difference in how long the hose holds up over time. Trident backs it with a 10-year warranty, which says something about how they stand behind the material.

For longer connections that need substantial bends, the corrugated silicone construction is built to flex and handle tight bend radius installs. It also has a wire helix between 2 ply reinforcement and a thick tube and cover to help it hold shape while routing.