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7L 350 260hp models (the models with the 3" exhaust risers) This part goes from the 3" riser to the top of the 4" to 3" tube elbow
) (1981-1983 White Paint) 1978-1980 models were similar but didn't have the two switches
1964 1965 1966 1967 1968 1969 1970 1971
Mounting adapter: 308185
MerCruiser 816329A3 816978C One Piece Exhaust Manifold 4cyl 140hp 3.0L 1990-1994 Harmonic Balancer 7L 350 260hp models (thePart Number(s) Included 816329A3 Intake Exhaust Manifold Assembly One Piece Construction (No End Caps on this) Stamped 816978C ***Make sure to use a 27 96429 Mounting Gasket with this manifold*** General Application Compatibility This seems to only have been found on MerCruiser 3. 0L Models 1990 1994 It appears the 3. 0LX models used a different Exhaust manifold. You should check the casting number on your manifold to make sure it matches Other
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