Mercury – Quicksilver Water Shutter | For Select MerCruiser Sterndrive Engines | 807166A1 Mercury Outboard Gear Lube Kits Brightly colored for greater visibility

Brightly colored for greater visibility (Remember to remove propeller stop before using your boat)

Johnson Pump 10-24228-1

Multivolt 9-33V DC

perfect for use under Mercury and Mariner paints

When the thumbprint is in the 12 o'clock position

Mercury – Quicksilver Water Shutter | For Select MerCruiser Sterndrive Engines | 807166A1 Mercury Outboard Gear Lube Kits Brightly colored for greater visibilityMercury 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,