Mercury SeaPro 300 CMS hj

Mercury SeaPro 300 CMS HP

€34,824.00

The Mercury SeaPro 300 CMS is a lightweight commercial-grade 4.6L V8 outboard delivering
300 hp of efficient, dependable power. Built for demanding daily operation, it features
Adaptive Speed Control, Idle Charge battery management, a commercial-duty gearcase and full
SmartCraft compatibility.

Technical Specifications

Model Mercury SeaPro 300 CMS
Horsepower 300 HP / 221 kW
Engine type V8
Displacement 4.6 L
Dry weight 239 kg (lightest model)
Alternator 85 A / 1071 W (with Idle Charge)
Fuel system Electronic Fuel Injection (MPI)
Colour Black
SmartCraft compatible Yes
Recommended fuel 87 Octane minimum (R+M/2) or 90 RON, up to 10% ethanol
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Mercury SeaPro 300 CMS – Built for Relentless Commercial Demands

The Mercury SeaPro 300 CMS is a heavy-duty V8 outboard engineered for long working days,
harsh environments and continuous commercial operation. With its robust
4.6-litre V8 powerhead and commercial-grade components, it delivers exceptional durability,
high torque at low rpm and dependable performance when your livelihood depends on it.

The CMS version (Conventional MidSection) is designed to be the
lightest in its class, making it ideal for commercial boats that require
high power with reduced overall weight. It offers outstanding balance, efficient operation
and lower vibration levels than previous mid-section designs.

Main Features

  • Adaptive Speed Control: Maintains engine rpm automatically even when load or water conditions change.
  • Idle Charge Battery Management: Boosts alternator output at idle when battery voltage drops.
  • Top-cowl Service Door: Allows quick oil checks and top-ups without removing the entire cowl.
  • Commercial-Grade Gearcase: Validated to last up to three times longer than recreational equivalents.
  • Exceptionally Quiet Operation: Tuned intake and exhaust combined with injector covers significantly reduce noise.
  • Lightest in Its Class: CMS models (200–300 hp) provide excellent power-to-weight ratios.

Performance

  • High-displacement 4.6L V8: Provides powerful low-end torque for heavy loads.
  • Reliable All-Day Operation: Engineered to run hard with reduced internal stress.
  • Compact, lightweight design: Enhances acceleration, handling and fuel efficiency.
  • Superior corrosion resistance: Durable coatings, proprietary alloys and freshwater flush system.
  • SmartCraft compatibility: Works seamlessly with VesselView, Active Trim, DTS and more.

SmartCraft® Features

  • DTS – Digital Throttle & Shift: Smooth shifting, instant response and quiet operation.
  • Active Trim: Automatic trim optimisation for performance and fuel savings.
  • VesselView Mobile: Wireless connection to mobile devices for engine monitoring and maintenance tracking.
  • SmartCraft Connect: Integration with Garmin and Raymarine multifunction displays.