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OMC V8-283, 305, 307 & 350 C.I.D.

All models: Center riser generic

OMC V8-283, 305, 307 & 350 C.I.D.
Part Number Description
CHV-1-83 Water cooled center discharge manifold to fit the small block GM engine (3/4" N.P.T. cooling hose connections). All years.
20-0082 Water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 3" I.D. exhaust hose.
20-0100 Water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 4" I.D. exhaust hose.
1-0104P Adaptor package for fresh water-cooled manifold (includes gaskets and block off plate).
1-0105 Center riser manifold-to-riser gasket for fresh water cooling.
1-0106P Adaptor package for raw water cooling. Used in pre-heating applications (includes gaskets and block off plate with vent hole).
1-0107 Center riser manifold-to-riser gasket (raw water cooling).
20-0082P Riser mounting package for both 20-0082 and 20-0100.
20-0082SS P Stainless steel mounting package (with brass plugs) for both 20-0082 and 20-0100. Not pictured.
20-0084P Straight exhaust adaptor (includes adaptor, hose and clamps). For use with 3-1/2" I.D. exhaust hose.
20-0085P Straight exhaust adaptor (includes adaptor, hose and clamps). For use with 2-1/2" I.D. exhaust hose.
20-0086P 90-degree exhaust elbow adaptor for I/O applications (includes adaptor, hose and clamps). For use with 2-1/2" I.D. exhaust hose.
20-0087P 90-degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
20-0088P 30-degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 2-1/2" I.D. exhaust hose.
20-0089P 30-degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
20-0092P 45-degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
20-0093P 90-degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3-1/2" or 4" I.D. exhaust hose.
20-0097 3" spacer block (complete with mounting hardware, gasket and 3/4" pipe plug). Capable of stacking.
CHV-1-83P Manifold mounting package (includes bolts and pipe plugs).
CHV-1-83SS-P Stainless steel manifold mounting package (includes stainless bolts and brass plugs). Not pictured.
CHV-47-0000 Manifold to cylinder head gasket.
MC-6-0001P Exhaust manifold plumbing fittings package for model 215.
OMC-20-0003 Hose bushing 3" to 3-1/2" (where applicable).
Note
Manifold includes all plugs, gaskets and mounting hardware to head. Risers include plugs, gasket and mounting hardware to mount to manifold.