old mercury gasket reference
Seems you're a Lucky guy because the last reference you give 27-77671was also changed to the new ref:
Item MM-2777671 has been superseded
the new reference is =MM-2741244T02
So you can use without any problem the gasket 27-77671 you have in stock...
And the SIERRA alternative reference is still SIE-183872
the torque procedure for this engine in added file is for 1994 and later
If your engine is a 90 thru 93 the procedure is different, just ask me.
Hope that helps
Bruno
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