Power your boat like a pro with Dart Pro 1 Marine cylinder heads. Their aluminum cylinder heads are offered bare or assembled for out-of-the-box performance. Pro 1 Marine heads are cast from 355-T61 aerospace alloy with an exclusive chromate finish to inhibit corrosion and provide superior strength and integrity. These Dart cylinder heads have highly efficient chambers with race-proven features, including rolled valve angles, an improved spark plug location, extra-long intake valves, raised exhaust ports, and fast-burn chambers. Assembled heads include super-tough Inconel exhaust valves to withstand the extended running times and temperatures typical of marine usage. Top your boat block with a couple of power makers--Dart Pro 1 Marine aluminum cylinder heads.

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