3 3/4" Softwall Marine Exh Hose 12 1/2' | Sierra 116-200-3344 Shields 16-200-3344 Marine Exhaust/Water Hose 3 3/4 in. Marine Exhaust / Water Hose (No Wire) 12 1/2 ft. length Straight connections in wet exhaust systems Engine water circulation lines Black heavy walled synthetic rubber Reinforced with 2 plies of synthetic cord Resistant to: engine heat, exhaust fumes, ozone, mild chemicals, antifreeze, salt water Temperature range: -20F to +200F continuous and +250F intermittent