ID these exhaust manifolds?

[biggsie]

When I bought my boat the guy gave me a bunch of spare parts. These look totally different than the PCM manifolds that are on my 351. Any ideas?http://img.tapatalk.com/d/13/10/30/pa5use5u.jpg


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[haugy]

Osco makes exhaust manifolds for all kinds of boats. But their logo has changed, so I'm guessing those are fairly old (10-15) years. Which is fine.

But they look like the standard exhaust manifolds for a PCM engine. They could be spares for your boat. If you have one go out you'll be able to see real quick if they fit. I'd hang on to them for spares. The OSCO line is typically cheaper than some of the factory spec'd ones. I don't know why, structurally or where they are manufactured. But my guess is they are the budget friendly replacement.

A good group to ask would be Skidim. I'd call them up and ask. They might have some feedback for you on them.

Company website
http://www.oscomotors.com/