2003 Mercruiser 4.3 Hose

[teamrevo]

Have a question, there is a yellow hose on the top starboard side. Is this for winterizing with anti-freeze? Or for flushing the engine without running it?

Thanks

 

[Bondo]

Re: 2003 Mercruiser 4.3 Hose

Ayuh,... We can't see your boat from here,.... Gotta Picture,..??
It don't sound OEM...