Mercruiser 3.7 190 Exhaust manifold to elbow gasket

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Sep 19, 2012
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Good morning ,
I have been having issues with coolant leaking into #3, and #4 cylinders. I have replaced pretty much everything from the head gasket up. Before I decided that the head gasket was bad, I replaced manifold and elbow but continued to have the problem. My question has to do with the gasket that is between the manifold and elbow. According to Mercruiser manual #8, the original gasket was three pieces (2 gasket and one metal in between), or the newer style being just one thick gasket. The picture in the manual shows both options with a slot cut out for the passageway toward the front of the motor, and the rear facing passage is blocked off. The new gasket I bought from Mercruiser (BAM) has both the front and rear passages open. Does anyone have any idea if this is correct? I called the distributer, and the said that Mercruiser changed it.
 

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