MerCruiser 816329A3 816978C One Piece Exhaust Manifold 4cyl 140hp 3.0L 1990-1994 Harmonic Balancer 7L 350 260hp models (the

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

This is for  a OMC Stringer Power Steering Unit Early 80's V6 V8 Engines 400 800

Shim:  15-73644A 1

8hp (110) - 2cyl (1962-1973) KB-5A / KB-8A / KB-11A

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