Mercury SeaPro 225hp brings heavy-duty power and longevity to the 225hp segment, thanks to its big 4.6L V8 architecture and purpose-built commercial features. This outboard offers the muscle of a much larger engine in a 225hp rating, translating to effortless performance on boats that might strain lesser engines. The abundant torque from the V8 means the SeaPro 225 can push loaded boats or fight strong currents without working as hard – directly contributing to longer engine life and reliable performance.
Designed for true commercial duty, the SeaPro 225 incorporates the same reinforced components and engineering philosophy found in Mercury’s higher-horsepower SeaPro engines. It spins at a slightly lower max RPM than recreational 225s, ensuring lower internal stresses and improved fuel economy in day-to-day operations. Mercury has fortified the engine internals and gearcase to handle continuous use – whether installed on a patrol craft, a rescue boat, or a heavy mid-sized fishing vessel, the SeaPro 225 endures the rigors of the job. Additionally, Mercury’s advanced anti-corrosion technologies guard every component – from the saltwater-resistant alloys to multiple layers of protective coating – so operators can count on this engine in marine environments for the long haul.
For those relying on their equipment daily, ease of maintenance and support are crucial – and the SeaPro 225 delivers here as well. Routine checks are straightforward, and Mercury’s extensive service network means help is always close by if needed. The powerful 85-amp alternator with intelligent charging ensures that even with multiple electronics running and long idle periods, the electrical system stays healthy. Ultimately, the Mercury SeaPro 225hp provides peace of mind with its big V8 powerhead running at lower stress – ensuring both excellent performance and longevity.
- Ideal use cases: Commercial and service boats (approximately 6–7 meters), including patrol craft, rescue and utility vessels, as well as mid-size fishing boats that need dependable 225hp in tough conditions. The SeaPro 225 thrives where midrange power must be delivered with maximum reliability.
- Recommended for: Agencies and operators who require maximum durability and torque in a midrange engine. The Mercury SeaPro 225hp offers peace of mind with its big V8 running at lower strain – perfect for commercial fishermen, law enforcement, and professional fleets needing a combination of power and long life in their engines.
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Engine hp:225 hp
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Engine type:V-8 [64°] with dual overhead camshafts [DOHC] and 32 valves
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Displacement:4600 cc (L)
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Max. RPM:4800 - 5600 RPM RPM
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Alternator Amp / Watt:85A / 1071W
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Fuel recommendation:Unleaded regular, minimum 87 octane (R+M/2) or 90 RON, maximum 10% ethanol
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Engine protection system:SmartCraft Engine Guard
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Reduction gear ratio:1.75:1
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Ignition type:SmartCraft PCM 112 Digital Inductive
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Recommended oil:25W-40 Synthetic Blend
NMMA Certified FCW SAE 25W-40
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Fuel system:EFI
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Cooling system:Water cooling + thermostat
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Gears:F-N-R
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Exhaust system:Through the propeller
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Oil tank capacity:6.6 L.
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Propeller:Yes





