Sierra Exhaust Outlet Flapper Guard

Freeport Marine Supply Verified independent store

→

Flapper valves prevent backflow and help to protect engines against water intrusion. Heavy-duty rubber flapper valve keeps following seas from entering exhaust outlet when moving s lowly or stopping. Key Features Heavy-duty rubber Includes adjustable stainless-steel clamp 3", 4", 5"/6" diameters Available Options Manufacturer Part Number Size 18-4457D 4" 18-4458D 5" - 6" Show more