West Marine
Sierra Exhaust Flapper Valve - 4"

Sierra Exhaust Flapper Valve - 4"

$29.99
Sierra Exhaust Flapper Valve - 4". 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 slowly or stopping.Key Features Heavy-duty rubberIncludes adjustable stainless-steel clamp3", 4", 5"/6" diameters

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