Description
Discover the advanced technology and power of the MerCruiser 4.5L 250 HP MPI Bravo engine for professionals.
MerCruiser 4.5L 250 HP MPI Bravo Sterndrive Engine: Performance, Specifications & Applications
Product Overview
The MerCruiser 4.5L 250 HP MPI Bravo Sterndrive Engine is a high-performance marine engine designed to deliver exceptional power, efficiency, and reliability for recreational boating enthusiasts. This engine is part of Mercury Marine’s 4.5L V6 lineup, known for its impressive torque, fuel efficiency, and advanced technology features.
Technical Specifications
| Specification | Details |
|---|---|
| Horsepower | 250 HP (184 kW) |
| Engine Type | V6, 2-valve/cylinder pushrod |
| Displacement | 4.5 liters (275 cu. in.) |
| Bore x Stroke | 4.0″ x 3.6″ (101.6 mm x 92 mm) |
| Compression Ratio | 9.4:1 |
| Fuel System | Multi-Port Electronic Fuel Injection (MPI) |
| Ignition System | SmartCraft PCM 112 Digital Inductive |
| Cooling System | Raw water cooled with thermostat; optional fresh water cooling with SeaCore |
| Exhaust System | Through-prop exhaust |
| Alternator Output | 70 amp / 882 watt (belt-driven) |
| Weight (Dry) | Approximately 650 lbs (295 kg) |
| Dimensions (L x W x H) | 30″ x 30″ x 22″ (762 mm x 762 mm x 559 mm) |
| Recommended Oil | NMMA Certified FCW 25W-40 Synthetic Blend |
| Fuel Requirements | Unleaded Regular 87 Octane Minimum (R+M/2); 90 RON 10% Ethanol Maximum |
| Drive Compatibility | Bravo One, Bravo Two, Bravo Three |
| Warranty | 3-year limited warranty |
Performance Features
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Enhanced Torque & Acceleration: The 4.5L V6 engine delivers impressive torque, allowing for quick planing and smooth acceleration, making it ideal for both cruising and towing activities.
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Advanced Fuel Efficiency: The Multi-Port Electronic Fuel Injection (MPI) system fine-tunes the air-to-fuel ratio, optimizing fuel consumption across the RPM range.
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Adaptive Speed Control: Maintains consistent RPM during hard turns, enhancing handling and providing a sportier, more intuitive driving experience without the need for constant throttle adjustments.
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Quiet Operation: The engine’s design includes noise-reducing features, ensuring a quieter ride and a more pleasant boating experience.
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SmartCraft Integration: The engine is compatible with Mercury’s SmartCraft system, offering advanced diagnostics, fuel management, and engine monitoring through a digital interface.
Corrosion Protection
The MerCruiser 4.5L 250 HP MPI Bravo Sterndrive Engine is designed with durability in mind:
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MercFusion Paint System: Creates an outer seal against the elements, providing enhanced corrosion resistance.
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MerCathode® System: Provides automatic protection against galvanic corrosion, extending the engine’s lifespan.
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SeaCore® System: An optional package that includes industrial hardcoat anodizing on the drive, stainless-steel fasteners and components, and a closed cooling system for maximum defense against saltwater effects.
Maintenance & Serviceability
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Easy Access: The engine features redesigned service access points, bringing all service areas to a single easily reachable location, color-coded for owner-friendly maintenance.
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Seasonal Protection: The air-actuated “Season Extender” water drain system allows for easier winterization and protection against freezing temperatures.
Applications
The MerCruiser 4.5L 250 HP MPI Bravo Sterndrive Engine is suitable for a variety of boating activities, including:
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Cruising: Provides smooth and efficient cruising capabilities for leisurely outings.
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Towing: Offers sufficient power for towing water sports enthusiasts, such as wakeboarders and water skiers.
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Performance Boating: Delivers the necessary power and acceleration for high-performance boating experiences.
