J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Engine Exhaust Hose

That sounds like a rip off. I replaced the exhaust hose on Rhapsody when I rebuilt the Yanmar in 2007. The replacement hose was Trident Flex Marine Wet Exhaust Water Hose. The size was 1.75" inside diameter by 23" long. Your size may vary so measure what you have. I also replaced the hose clamps. By AYBC standards, you need to double clamp both ends. The hose is ~ $10 per foot from Defender.

Depending on what model Yanmar you have, you may have a 90 degree mixing elbow or 180 degree mixing elbow for the pipe out of the exhaust manifold. You can disassemble it and bring it to the parts supplier for a replacement if needed. Plan on getting gaskets and possible new fasteners, as you will probably destroy the old ones getting them off.

180 Degree


90 Degree shown on 1GM but similar elbow to 2GM