Trident Ply Softwall Exhaust Hose, 4" x 12.5" 

It is a premium type certified wet exhaust hose for short straight connections. Thick tube and cover with 2 or4 ply reinforcement. Resists heat, ozone, fumes and collapse. Exhaust hose should be double clamped. Exceeds all marine exhaust standards. Blue stripe. 3 year warranty.

ID: 4", OD: 4-9/16", Length: 12-1/2', Type: 4 ply, Working Pressure: 54#