What is this in my engine compartment?

[IanHartten]

I was down in the engine compartment and looking in the bilge and saw this 2 black plastic cylinders with silver rings and wire tires attached to them.

Anyone know what these are? There are 2 of them just sitting in the bilge rolling around.

This is a 2007 Sea Ray 340 with Twin 8.1s

 

[JimG]

Those are plugs to fill the holes when you take your traducers out for service. Mine are hanging on the fire wall... you might want to do the same.

 

[Fat Tony]

They look like drain plugs to me. perhaps the intention is for them to be available if a seacock goes bad...

 

[b_arrington]

Those are plugs to fill the holes when you take your traducers out for service. Mine are hanging on the fire wall... you might want to do the same.

Exactly. Mine are attached to the transducer cable.

 

[Al Andalus]

They also plug the hole when you want to take out the paddle wheel for your speed in order to clean it.