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300 HP @ 5000 RPM - Standard / Left-Hand rotation. Brand New 350 cubic inch partially dressed marine engine assembly. Feature include: New 75mm TBU, 2-piece aluminum intake manifold with iron base, new fuel injector & rail assembly, TPS & TMAP sensors, HVS assembly, nodular iron crankshaft, roller camshaft, Quicksilver iron cylinder heads, screw-in rocker studs, stainless steel valves, 9.4:1 hypereutectic pistons. 300 HP New Crate Engine Not just a service replacement.Includes: Harmonic balancer, oil pan, circulating water pump, NGK spark plugs, wires and crank sensor. Runs on 87 Octane Fuel.