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Engine Exhaust Water Shutters

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Water shutters are located inside of the engine exhaust system pipes, just before the exhaust gas passes thru the transom. Without these shutters, lake water can be sucked backwards into the engine when the engine is hot and is being shut down. Many times, when the outdrive is removed or the drive is separated for a water pump replacement, you will find a pieces of these laying around. They should be replaced to protect the engine. 

Some shutters fit down below in the pipe, just before the gases are leaving the boat. The engine usually has to be remove to replace these shutters. 

Other shutters are located up above, where the exhaust gas just leaves the engine. These can be replaced by removing the cast iron exhaust elbow or sometimes sliding down the 1st rubber bellows.

 

 

This is MerCruiser p/n 60930. It is used on many applications. 

This has a 1/8 by 1/4 metal bar molded into the rubber which is 3 inches long.

Some applications use a grommet at each end of this shutter to hold it in place and some use the a plastic retainer ring. ( both are shown below )

 

   : Order # 2727

 

 

 

This is MerCruiser p/n 25- 43809 water shutter grommet. It fits on each end of the above water shutter.

These are sold each.

 

   : Order # 3809

 

 

 

 

This is MerCruiser p/n 60931 retainer. It fits the above water shutter.

 

   : Order # 0931

 

 

 

 

 

 

  Please Note, this item has been discontinued by MerCruiser and replaced with our # 2802 & # 7166 which are shown below.  

 

This is MerCruiser p/n 14348A2 water shutter. It is used on many V-6 & V-8 applications. 

This shutter has a stainless steel plate molded into the rubber. It is 4 1/2 inches long by 2 1/2 inches wide. It is held in place with a 1/8 inch round metal rod which is 3 1/2 inches long and 2 grommets which are included.

The number 14348 is stamped into the stainless steel plate.

 

 

 

  Please Note, this item has been discontinued by MerCruiser and replaced with our # 2802 & # 7166 which are shown below.  

 

 

 

 

 

This is MerCruiser p/n 807166A3 water shutter which is a newer replacement for the above p/n 14348A2 shutter.

This does not use any pins or grommets to hold it in place because it has 2 tabs molded into the sides which snap into the holes which the above grommets used.

This shutter comes from either Sierra or Mallory Marine and is sold separately.

This water shutter is used on   

   : Order # 2802

 

 

 

This is MerCruiser p/n 807166A1 water shutter kit. It is used on some 1996 & newer V-6 & V-8 engines. 

This shutter is 6 inches long by 2 1/2 inches wide. It is held in place with a 1/8 inch by 1/4 inch metal bar molded to it which is 3 inches long and has 2 grommets which are included.

This water shutter is used on   

 

: Order # 7166

 

 

 

 

 

This is MerCruiser p/n 45586 water shutter. It is used on many applications. 

This has a 1/8 by 1/4 metal bar molded into the rubber which is 2 1/8 inches long.

 

   : Order # 5586

 

 

 

This is MerCruiser p/n 99370A2 water shutter kit ( old # 92802 ). It is used on many applications. 

This shutter has a stainless steel plate molded into the rubber. It is 3 1/8 inches long by 2 1/2 inches wide. It is held in place with a 1/8 inch round metal rod which is 3 1/8 inches long and 2 grommets which are included.

The number 99370 or 92802 is stamped into the stainless steel plate.

   : Order # 9370

 

 

 

Below Are For Through The Hull Exhaust Only

 

This is MerCruiser p/n 57887 water shutter. It is used on applications which have thru the hull exhaust. This water shutter is sold in a package of (1) shutter and is mounted inside of the 3 inch diameter horizontal pipe going through the transom.

This has a 1/8 by 1/4 metal bar molded into the rubber which is 2 1/2 inches long.

 

07/04/12 MerCruiser has discontinued this water shutter p/n 57887.   We only have (1) left in stock.

   : Order # 7887

 

 

This is MerCruiser p/n 12647 water shutter. It is used on applications which have thru the hull exhaust. This water shutter is sold in a package of (1) shutter and is mounted inside of the 4 inch diameter horizontal pipe going through the transom.

This has a 1/8 by 1/4 metal bar molded into the rubber which is 3 1/2 inches long.

 

 

   : Order # 2647

 

 

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  Last modified: April 22, 2014 
 

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