Mercury – Quicksilver Water Shutter | For Select MerCruiser Sterndrive Engines | 807166A1 Mercury Outboard Gear Lube Kits Accommodates Sea-Dog Round Flagpoles (328112-1

Mercury – Quicksilver Water Shutter | For Select MerCruiser Sterndrive Engines | 807166A1 Mercury Outboard Gear Lube Kits Accommodates Sea-Dog Round Flagpoles (328112-1Mercury Quicksilver Water Shutter For Select MerCruiser Sterndrive Engines 807166A1 Overview A small part with a big job, the Mercury Marine 807166A1 Quicksilver Water Shutter helps keep water where it belongs out of your engine. Designed for select MerCruiser sterndrive and inboard engines, this shutter sits inside the exhaust system and acts like a one way valve. When your engine is running, it allows exhaust gases to flow freely. When its idling,

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