377 MAG - 320 hp

RELIABILITY

• ECM 555 fuel and ignition system along with platinum-tipped spark plugs ensure reliable starts and outstanding performance, year after year
• Exclusive Engine Guardian protection senses potential problems and virtually eliminates the chance for engine damage due to overheating, low oil pressure, or low drive lube
• Dry-joint exhaust eliminates the chance for water to enter engine through leaky gaskets
• Water-separating fuel filter helps protect fuel system and engine against damage
• Proven GM cast iron block V8 power for years of reliable operation
• Ceramic coated exhaust elbows better resist high temperature and corrosion
• Brass sea water pump housing improves life and better resists damage from running dry

PERFORMANCE

• MerCruiser's exclusive 377 MAG engine features a long stroke 4340 crankshaft and custom ground cam for superb big-boat power in a lightweight package
• Multi-Port Fuel Injection provides easy starts, cold or hot, and automatically adjusts for changes in temperature, weather, or altitude for terrific performance in any environment
• Two-piece, long-runner intake manifold design improves low and mid-range torque for better acceleration and handling heavy loads
• HVS Ignition with knock control maximizes power and protects against low quality fuels
• Standard anti-feedback power steering helps reduces operator fatigue and makes boat handling a breeze
• Low restriction flame arrestor for added horsepower and torque
• Improved shift system feel along with a 1/3 reduction in shift effort

EASY OWNERSHIP

• 3-year/300 hour maintenance interval on many periodic service items saves time and money
• Easy Oil Drain system coupled with convenient remote oil filter location makes oil changes cleaner and makes periodic service simple and less work
• Color-coded service points makes checking fluid levels simple and straightforward
• Operates on easy to find, less expensive 87 octane fuel
• Engine-mounted drive lube monitor for easy lube check or add from inside the boat
• All models come with simple to use water drain systems designed for many boat applications

TECHNOLOGY

• The Digital Throttle and Shift option eliminates push-pull cables resulting in no helm maintenance and silky smooth operation for the life of the product resulting in instant response and greater authority while docking
• Standard features with DTS are: Autosynch of multiple engines, SmartStart, Shift Protection, Multiple Helm capability, and Shadow Technology for triple and quad engine installations
• MerCathode galvanic corrosion prevention system standard on Bravo models, available on Alpha models, offers unmatched active electronic corrosion protection
• MPI engines are designed to display engine information on your choice of analog or SmartCraft digitally-driven gages and displays.