Sierra Exhaust Protector Flapper ValveThe Sierra 18-4458 Exhaust Protector Flapper Valve helps prevent following water from entering the marine exhaust system.Includes:Â Stainless Steel ClampSize:Â 5"...
Aftermarket Mercruiser 12644A1 4" Exhaust Protector ValveThe Sierra 18-4457 Exhaust Protector Valve helps prevent following water from entering the marine exhaust system in Mercruiser applications...