Mercruiser 4-Cylinder 181 C.I.D. 140 H.P. 3.0L & 3.0 LX Models

All models 1990 & later (Vortec style head): Log style direct replacement

Mercruiser 4-Cylinder 181 C.I.D. 140 H.P. 3.0L & 3.0 LX Models
Part Number Description
MC-1-860235 Direct replacement exhaust manifold. Replaces MerCruiser part number 860235A04.
MC-20-12076 Direct replacement exhaust riser. Replaces MerCruiser part number 12076A2.
MC-20-12076P Exhaust riser mounting kit.
50-170-207 3/8"-16 X 3/4" Hex head cap screw (for mounting lifting eye).
50-512-020 Fitting, 3/4" N.P.T. X 1" hose.
MC47-27-99777-2 Replacement exhaust riser to manifold gasket. Supersedes MerCruiser part numbers 27-52076 and 27-99777.
MC47-27-807982 Replacement carburetor to intake / exhaust manifold gasket.
MC47-27-815528 Replacement cylinder head to exhaust manifold gasket.
MC-50-865549 Lifting eye.
MC-50-10-53728 Replacement 3/8"-16 X 4-5/8" screw.
MC-50-10-806300 Replacement 3/8" X 5-3/8" stud.
MC-50-11-24883 Replacement nut.
MC-50-11-862902 Replacement nut.
MC-50-12-20553 Replacement washer.
MC-50-22-806608 Drain plug.
MC-50-22-845175 Replacement reducer bushing, 3/4" to 3/8".
MC-50-22-862065 Replacement 90-degree adaptor assembly.
MC-50-25-32506 Replacement O-ring.
MC-50-32-14797 Replacement fuel line.
MC-50-23-861634 Replacement cooling water hose, formed.
Manifold includes all plugs, gaskets and mounting hardware to head. Risers include plugs, gasket and mounting hardware to mount to manifold.

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