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Thread: Mercruiser Exhaust Manifolds
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03-21-2015, 11:04 AM #15000 RPM
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Mercruiser Exhaust Manifolds
Wondering when to replace the exhaust manifolds on a 2001 5.7 L EFI mercruiser. Almost all freshwater (Delaware River) use. About 12 seasons, probably 500 - 600 hours.
I know why, just not sure when. No current issues.