These photos are of my Mercruiser...

[Sauvio]

These photos are of my Mercruiser 3.0 engine.  As you can see some of the connecter are very rusty. I don't know too much about these engines.  Can anyone tell me what these hoses and connnections are and if i should replace them.  Thanks for the help!

[wingless]

Welcome to the forum.

The two ell bend steel then rubber hoses are for power steering. They are about $150 each.

https://www.mercruiserparts.com/bam/subassembly/30914/1604/240

This is a good time to clean up and protect those parts.

My suggestion would be to scrape off all the rust, then lightly sand, then paint w/ Rustoleum.

Same process for all the other rust, including on the engine block.

Maintain the engine and parts to limit deterioration, failure and replacement costs.

[wingless]

Also, the nearby hose clamp has deteriorated and should be replaced. Use a nice marine grade part.

Inspect the other hose clamps as they are probably in similar condition.

[Sauvio]

Wing,

Thanks for the heads up....