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Exhaust manifold gasket: ERC3606 or ERR6733?

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Old 04-19-2023, 12:15 AM
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Default Exhaust manifold gasket: ERC3606 or ERR6733?
ERC3606 is a single
ERR6733 is a double

What is the difference besides that one is single the other a double? With the single the block looks better when installed. Which one seals better?
 
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Old 04-19-2023, 07:45 PM
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Double will be a bit easier to install/align. My question about sealing is regarding ML Steel vs composite. (Sorry to side-track).
 
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Old 04-19-2023, 09:07 PM
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I have 2 piece steel on both of mine and haven’t had any leaks.
 
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