Blue plastic drain plugs.

[kenny nunez]

Yesterday I finished installing the 6.2 MPI after having the transom replaced on my DONZI. While looking for any leaks I saw a stream under the large circulating pump hose. I touched the plug and it fell apart. Not a good thing to happen in the water. The broken shell comes out easy with a small screwdriver shoved in the hole. It looked like the P.O. Used pliers on it.
part # 8M0119211. They come 5 to the pack. The thread pitch is 1/2” 13 in case you need to replace one in an emergency with a bolt.

 

[TyeeMan]

Or you can get stainless steel steel plugs from MichiganMotorz and they'll last forever.

https://www.michiganmotorz.com/advanced_search_result.php?keywords=stainless+steel+drain+plugs

 

[Bondo]

Ayuh,...... SSteel ones would be nice,.....

The plastic ones rot with time,.....

 

[wingless]

My blue Mercruiser thumb screw bolts have been working fine for years.

These are removed and replaced after every usage on my boat.

 

[kenny nunez]

Looks like I will be ordering some plugs from Michiganmotors, Thanks for the info. Kenny

 

[TyeeMan]

Glad to help out.