Dependable and versatile, MerCruiser small block engines are ideal for runabouts and cruisers, delivering rock-solid performance and allowing you to enjoy the activities you want to, when you want to

• MerCruiser small block V8s are the premier option for runabout owners seeking the best available power configuration
• Owners of dual-engine cruisers up to 38 feet will find steadfast performance in MerCruiser small blocks with features such as the intuitive joystick control of Axius, which allows precise and easy boat maneuverability
• Reap the benefits of standard SmartCraft Digital Throttle & Shift: smooth shifting, immediate throttle response, and cutting-edge digital controls and information displays
• SmartCraft features such as ECO-Screen help you optimize fuel economy; MercMonitor lets you customize data readouts displayed on an easy-to-read LED screen.

12th-Round Toughness

MerCruiser's 5.0L, 350 MAG (5.7L) and 377 MAG (6.2L) sterndrives bring proven V8 durability to the table. Their robust, efficient design optimizes acceleration and longevity. Standard on Bravo drive pairings and available with Alpha drives, Mercathode Corrosion Protection gives your system the edge it needs to combat the rigors of heavy use and the marine environment.

Brains & Brawn

Mercury's exclusive SmartCraft technology acutely monitors the vitals of your engine systems, such as fuel usage, RPM, engine trim and efficiency, and delivers them to you in an easy-to-read digital display. SmartCraft functions such as SmartTow - which optimizes watersports settings - take the complication out of piloting so that you can focus on maximizing fun out on the water.

All-Around Performer

MerCruiser offers small block 5.7 and 6.2L inboards, as well. An inboard configuration makes these V8 engines perfect for those looking to wakeboard, ski or efficiently power traditional cruisers.

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HP/Kw @ Prop	260 / 191
Full throttle RPM	4600-5000
Cylinder Configuration	V-8
Displacement (CID / L)	305 CID / 5 L
Weight	862lbs 392kg
Dimensions (L x W x H)	32in x 30in x 22in 814mm x 740mm x 559mm
Compression Ratio	9:4:1
Bore and Stroke (in / mm)	3.73 x 3.48in 95 x 88mm
Ignition	Crank fired high voltage switch with knock control
Alternator Amp	65 amp / 917 watt
Cooling Systems	Raw water Thermostatically controlled
Accessory Drive Systems	Serpentine belt
Water Drain Systems	Single point manual drain (Alpha) Three-point manual (Bravo)
Exhaust System	Electro-deposition paint coated iron manifold with dry joint elbow
Recommended Oil	Mercury MerCruiser Full-Synthetic Engine Oil, 20W-40, NMMC FC-W rated
Recommended Fuel	87% octane / up to 10% ethanol
Engine Control System	PCM 09 with SmartCraft CAN capability OBD-M diagnostics Dual oxygen sensors
Engine Guardian System	High coolant temperature Knock control Low oil pressure Low sea water pressure Low voltage Over-rev
Fuel Delivery Systems	Cool Fuel
Fuel Injection Systems	Multi-point electronic fuel injection (EFI) Sequential Fuel Injection with Digital Throttle & Shift
Emissions Control Technology	Yes*
Digital Throttle and Shift (Optional)	Yes
Boat Types	Cruiser Deckboat Fish Performance (more than 60mph) Pontoon Runabout (cuddy) Runabout (open bow) Sportboat (sterndrive)

 

	Alpha One Drive The most popular sterndrive in the world. Single/twin applications up to 65 mph for gas engines up to 300 hp The Alpha® One drive earned the title of "world's most popular sterndrive" because it delivers reliable performance in a value package. reliable performance means more family fun year after year without missing a beat. Alpha One drives slice through the water with an efficient hydrodynamic profile producing very little drag. And, because of the Alpha drive's many maintenance-free features, you'll enjoy a worry free ownership experience.
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	Bravo One Great performance starts with heart. Bravo! Single/twin/triple applications over 100mph for gas engines up to 600 hp The Bravo One drive delivers superior performance with best-in-class shifting. Its exclusive performance torpedo design and dual water pickups allow for speeds topping the century mark, with exceptional handling at high and low speeds. A trim-limit switch sets your drive angle for maximum performance every time, and a greaseable drive coupler allows for quick and easy service without removing the drive unit.
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	Bravo Two Handle the biggest boats with authority. Twin applications up to 55 mph for gas engines up to 450 hp The unique Bravo Two drive has an unmatched ability to maximize lift and thrust for cruisers and houseboats without breaking a sweat. Due to the girth of the gearcase, Bravo Two is capable of accommodating a huge 20-inch diameter prop with deeper gear ratios. This allows the Bravo Two to deliver high thrust around the dock, quick planing and improved fuel economy-putting you in control. maintenance-free hinge pins allow for easy service without having to pull the boat from the water.
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	Bravo Three Efficient.Maneuverable. Unbeatable. Single/twin applications up to 65mph for gas engines up to 525 hp The twin-prop design says it all. Whether in a single-unit or twin-unit application, the Bravo Three is an efficient drive built without compromise. Perhaps it's the best-in-class shifting or its counter-rotating propeller design - enabling agile handling in reverse for precision maneuverability. And the greaseable gimbal bearing makes for an easy ownership experience-allowing for service without removing the drive unit. The Bravo Three X drive, standard on big block 8.2L high-output engines, is a superstrength drive with high performance attributes.
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