MerCruiser 350 MAG

300 HP 4800 - 5200 RPM V8

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.
Ceramic coated exhaust elbows better resist high temperature and corrosion.
Brass sea water pump housing improves life and better resists damage from running dry.
Multi-Port Fuel Injection provides easy starts, cold or hot, and automatically adjusts for changes in temperature, weather, or altitude for terrific performance.
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.
Proven GM cast iron V8 block for years of reliable operation.
Engine-mounted drive lube monitor for easy lube check or add from inside the boat.
MPI engines are designed to display engine information on your choice of analog or SmartCraft digitally-driven gauges and displays.
Operates on easy to find, less expensive 87 octane fuel.




Power
300HP (224 kW)


Full Throttle Range
4800 - 5200 RPM


Displacement
350 CID (5.7L)


Engine Type
V8


Bore & Stroke
4.00" X 3.48" (101mm X 88mm)


Compression Ratio
9.4:1


Fuel Requirement
87 Octane (R+M)/2


Engine Control System
ECM 555 with SmartCraft CAN Capability (PCM 555 w/DTS)


Fuel Delivery System
Gen II Cool Fuel-Alpha, Gen III Cool Fuel-Bravo


Fuel Injection System
Multi-Point Electronic Fuel Injection (Sequential Fuel Injection w/DTS)


Induction System
2-pieceLong Runner intake with 75mm Throttle Body (80mm w/DTS)


Ignition System
Crank-fired High Voltage Switch w/Knock Control and Platinum Plugs


Charging System
65 Amp/917 Watt Alternator


Water Drain System
3-point Manual Drain (Bravo Models), Single Point Air-Actuated (Optional on Bravo Models), Single Point Manual Drain (Alpha Models)


Exhaust System
Iron Manifold with Ceramic Coated Dry-joint Exhaust Elbow


Cooling System
Thermostatically Controlled, Raw Water


Accessory Drive System
Serpentine Belt


Recommended Engine Oil
MerCruiser Full Synthetic Engine Oil - SAE 20W-40


Engine Guardian System
Low Oil Pressure, High Coolant Temperature, Low Drive Lube, Low Sea Water Pressure, Low Voltage, Over-rev control, Knock Control


Alpha Ratios
1.47 (P)


Bravo One Ratios
1.36, 1.50, 1.65 (P)


Bravo Two Ratios
2.00, 2.20 (P)


Bravo Three Ratios
2.00. 2.20 (P), 2.43


Dimensions (LxWxH) in
32 x 30 x 22


Dimensions (LxWxH) mm
814 x 740 x 559


Weight w/ Alpha (lbs./kg)
946/430


Weight w/ Bravo One (lbs./kg)
987/449


Weight w/ Bravo Two (lbs./kg)
1004/456


Weight w/ Bravo Three (lbs./kg)
1013/460


Digital Throttle and Shift
Optional


Optional Freshwater Cooling
Available


CA 4-Star Emissions Control Model
Available