Mercruiser exhaust manifold questions

[itswink]

I have replaced an exhaust manifold on my boat already and now it's time for the other. Question is are brands like Mallory and Sierra ok? I used oem last time.
I want to do it cheap as possible of course but I don't want to put junk on there.
Also, what is Sierra part number?

Engine serial 0w355448
Mercruiser manifold 865735a02. If my records are correct.

I'm seeing good prices on the aftermarket, just don't have experience with them.

 

[Failproof]

Re: Mercruiser exhaust manifold questions

Had good luck with aftermarket on fresh water, salt use mercruiser parts, they pay for themselves in not damaging the engine.

 

[Don S]

Re: Mercruiser exhaust manifold questions

Why are you replacing them? Plugged up? Leaking? Those are the dry joint manifolds.
Normally, they both get replaced at the same time to prevent one from cooling more than the other.

 

[itswink]

Re: Mercruiser exhaust manifold questions

It is leaking. Has a crack. The other one had the same crack last year.
Not sure if the previous owner winterized or if it's just time. 6 year old boat