Exhaust Manifold Advice

Mbcarter967

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Jun 18, 2022
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I’m buying a new exhaust manifold for my AQ125B and I’m trying to decide between a used Osco that looks to be in pretty great shape or a new HGE. The HGE costs about $25 more. Does anybody have experience with either of those brands? If so, which would you recommend considering one is used and the other is new?
 

Scott Danforth

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Osco is a production casting house used by both Mercruiser and Volvo in the past.

HGE is a will-fit aftermarket company.

if these are your only two choices. the Osco will most likely be a better casting.
 

Mbcarter967

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Here are some pictures of the Osco if that helps make a better decision
F95A682E-79CC-4196-A3E9-D00F477EF5CA.jpeg
 

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Scott Danforth

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I personally recommend new vs used as I view manifolds like I do underwear.

only you can make the determination between the two.

If it was me, and I was looking at two used manifolds, one HGE and one Osco, unless the Osco had big amounts of flaking rust, I would buy the Osco
 

Mbcarter967

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I personally recommend new vs used as I view manifolds like I do underwear.

only you can make the determination between the two.

If it was me, and I was looking at two used manifolds, one HGE and one Osco, unless the Osco had big amounts of flaking rust, I would buy the Osco
Unfortunately, the Osco is online so I can’t get a really good look at it aside from the pictures I posted. The HGE is also new if that changes things. Used Osco vs new HGE.
 

Lou C

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Can't comment about HGE but I used Barr Marine aftermarket on my 4.3 V6 Cobra and they fit fine.
 

Scott Danforth

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Unfortunately, the Osco is online so I can’t get a really good look at it aside from the pictures I posted. The HGE is also new if that changes things. Used Osco vs new HGE.
again, Osco is used by both Volvo and Mercruiser and has a great reputation, or at least they did as they recently sold off their patterns and got out of the marine manifold business.

Barr is a better supplier than Osco and is the same casting house used by every marine company out there as well as most of the aftermarket automotive.

HGE is not used by any of the OEM's and is in the same category as GLM.

I personally would not use HGE myself even if it was new.
 
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