807166A1 Mercury MerCruiser Shutter Assembly Water | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Shutter Assembly - Part Number: 807166A1

A genuine Quicksilver exhaust water shutter assembly used in selected MerCruiser V6 and V8 exhaust systems. This shutter acts as a one-way exhaust flapper to help prevent following seas, surge water or backwash from travelling up the exhaust system toward the engine.

⚙️ Key Features

• Genuine Quicksilver OEM water shutter assembly

• Designed for MerCruiser sterndrive exhaust systems

• Helps prevent water reversion through the exhaust

• Commonly fitted in Y-pipe and exhaust outlet applications

• Important protection part for V6 and V8 MerCruiser engines

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• No available supersession chain

OEM / Related Numbers:

• 807166A1

• 807166A 1

• 807166A3

• 807167

Aftermarket / Verified Equivalents:

• EMP: 32-08306

• Red Rhino: MR-507

• Recmar: WA 807166A1

🚤 Compatibility

Commonly used on:

• MerCruiser V6 and V8 sterndrive exhaust water shutter applications

Typically suits:

• Engine models:

• 7.4L Bravo GM 454 V8 - 1988-1991, serial 0B771113 to 0D603117

• 7.4L Bravo Gen V GM 454 V8 - 1992-1996, serial 0D603118 to 0F800699

• 454 MAG Bravo Gen V GM 454 V8 - 1992-1994, serial 0D805069 to 0F304999

• 350 MAG Bravo MPI GM 350 V8 - 1996, serial 0F602000 to 0K001500

• 350 MAG Bravo MPI GM 350 V8 - 1997, serial 0K001501 and up

• 5.7L EFI TBI GM 350 V8 - 1996, serial 0F752400 to 0K001505

• 5.7L EFI TBI GM 350 V8 - 1997, serial 0K001506 to 0K999999

• 5.7LX EFI TBI GM 350 V8 - 1996, serial 0F752400 to 0K001505

• 5.7LX EFI TBI GM 350 V8 - 1997, serial 0K001506 to 0K999999

• 5.7LX Bravo EFI Gen+ GM 350 V8 - 1996, serial 0F800300 to 0K001508

• 5.7LX Bravo EFI Gen+ GM 350 V8 - 1997, serial 0K001509 and up

• 350 MAG Alpha EFI GM 350 V8 - 1996, serial 0F800300 to 0K001508

• 350 MAG Alpha EFI GM 350 V8 - 1997, serial 0K001509 and up

• 350 MAG MPI Alpha / Bravo - serial 0L010019 to 0L339999

• 350 MAG MPI Alpha / Bravo - serial 0L331599 to 0M299999

• 350 MAG MPI Alpha / Bravo - serial 0M300000 to 0M599999

• 350 MAG MPI Alpha / Bravo - serial 0M600000 to 0W059999

• 350 MAG MPI Alpha / Bravo - serial 0W060000 to 0W309999

• 350 MAG MPI Alpha / Bravo - serial 0W310000 to 0W649999

• 350 MAG MPI Horizon Alpha / Bravo - serial 0M300000 to 0M599999

• 350 MAG MPI Horizon Alpha / Bravo - serial 0W060000 to 0W309999

• 350 MAG MPI Horizon Alpha / Bravo - serial 0W310000 to 0W649999

• 4.3L Gen II 2BBL GM 262 V6 - 1992-1993, serial 0D714107 to 0F000877

• 4.3LX Gen II 4BBL GM 262 V6 - 1992-1993, serial 0D714370 to 0F001219

• 4.3L Gen II 2BBL GM 262 V6 - 1996, serial 0F601127 to 0F802999

• 4.3LX Gen II 4BBL GM 262 V6 - 1996, serial 0F601127 to 0F802999

• 262 MAG TBI Gen+ - serial 0F803800 to 0K999999

• 4.3L Gen+ 2BBL GM 262 V6 - 1998, serial 0L010044 to 0M614999

• 4.3LH Gen+ 4BBL GM 262 V6 - 1998, serial 0L010044 to 0M614999

• 4.3L EFI Gen+ TBI GM 262 V6 - serial 0L012009 to 0M322780

• 4.3L Carb Alpha / Bravo - serial 0M615000 to 0W300012

• 4.3L Carb Alpha / Bravo - serial 0W300013 to 0W309999

• 4.3L Carb Alpha / Bravo - serial 0W310000 to 0W649999

• 4.3L Carb Alpha / Bravo - serial 0W650000 to 1A063239

• 4.3L Carb Alpha / Bravo - serial 1A063240 and up

• 4.3L MPI Alpha / Bravo - serial 0M300000 to 0M614999

• 4.3L MPI Alpha / Bravo - serial 0M615000 to 0W309999

• 4.3L MPI Alpha / Bravo - serial 0W310000 to 0W649999

• 4.3L MPI Alpha / Bravo - serial 0W650000 to 1A063239

• 4.3L MPI Alpha / Bravo - serial 1A063240 and up

• 5.0L 2BBL GM 305 V8 - 1998-2001, serial 0L015751 to 0M599999

• 5.0L Carb Alpha / Bravo - serial 0M600000 to 0W300009

• 5.0L Carb Alpha / Bravo - serial 0W300010 to 0W309999

• 5.0L Carb Alpha / Bravo - serial 0W650000 and up

• 5.0L MPI Alpha / Bravo - serial 0M300000 to 0M599999

• 5.0L MPI Alpha / Bravo - serial 0M600000 to 0W059999

• 5.0L MPI Alpha / Bravo - serial 0W060000 to 0W309999

• 5.0L MPI Alpha / Bravo - serial 0W310000 to 0W649999

• 5.7L 2BBL GM 350 V8 - 1996, serial 0F601000 to 0K001526

• 5.7L 2BBL GM 350 V8 - 1997, serial 0K001527 to 0K999999

• 5.7L 2BBL GM 350 V8 - 1998-2001, serial 0L010037 to 0M599999

• 5.7L Carb Alpha / Bravo - serial 0M600000 to 0W300754

• 5.7L Carb Alpha / Bravo - serial 0W300755 to 0W309999

• 5.7L Carb Alpha / Bravo - serial 0W650000 and up

• 6.2L MPI Bravo - serial 0L680003 to 0M299999

• 6.2L MPI Bravo - serial 0M300000 to 0M599999

• 6.2L MPI Bravo - serial 0W060000 to 0W309999

• 6.2L MPI Bravo - serial 0W310000 to 0W649999

• 6.2L MPI Horizon Bravo - serial 0M300000 to 0M599999

• 6.2L MPI Horizon Bravo - serial 0W060000 to 0W309999

• 6.2L MPI Horizon Bravo - serial 0W310000 to 0W649999

• 7.4LX Bravo MPI Gen V GM 454 V8 - 1996, serial 0F602010 to 0F801999

• 7.4LX Bravo MPI Gen VI GM 454 V8 - 1996-1997, serial 0F802000 to 0K999999

• 7.4L Bravo MPI Gen VI GM 454 V8 - 1998-2000, serial 0L010003 to 0M024330

• 7.4LX Bravo TBI Gen VI GM 454 V8 - 1996-1997, serial 0F820000 to 0K999999

• 8.2L MPI Bravo - serial 1G400000 to 1G499999

• 8.2L MAG EC Base Model - serial 2A041665 to 2A051741

• 8.2L MAG EC Base Model - serial 2A051743 and up

• 8.2L MAG EC H.O. Model - serial 2A041665 to 2A051740

• 8.2L MAG EC H.O. Model - serial 2A051742 and up

• HP Range: commonly used across MerCruiser V6 and V8 sterndrive engines

• Engine Type: MerCruiser petrol V6 / V8 exhaust systems

• System Type: Exhaust Y-pipe / water shutter / exhaust flapper assembly

🔌 Function

The water shutter acts as an exhaust check valve, helping stop water from travelling backward through the exhaust system toward the engine.

Common signs of failure:

• Rattling or broken shutter pieces in the exhaust

• Water intrusion through the exhaust system

• Engine hard starting after water backflow

• Overheating caused by broken shutter debris restricting exhaust flow

• Missing, burnt, warped or damaged exhaust flapper material

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging