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cpperformance

CP Performance Boaters Shopping and Product Info Guide
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Intake & Exhaust Valves

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Manley
Stainless Steel Intake Valves And Inconel Exhaust Valves

valves

These valves have become the standard upon which all marine heads are constructed. If someone is telling you they have a valve just as good or better than a Manley Inconell valve "Beware". There's a reason they are the choice of real marine engine builders and cylinder head manufacturers, no other valve has the ability to make the claim of having over 1,000 times the fatigue strength of other competitive valves.

Note: This one part in your engine quite possibly takes the most strain of any given part in your engine.

Part No. Type Head Dia. Stem Dia. Height
850-11587 Exh. 1.880 .3715 Stock
850-11731 Exh. 1.880 .3715 .100 Longer
850-11507 Exh. 1.900 .3715 Stock
850-11733 Exh. 1.900 .3715 .100 Longer
850-11520 Int. 2.190 .3720 Stock
850-11562 Int. 2.250 .3720 Stock
850-11524 Int. 2.250 .3720 .100 Longer