Mercruiser Horizon 5.7 Inboard – MERCRUISER INBOARDS represent the industry’s best when it comes to delivering reliable, long-lasting and easy-to-own power. From our Horizon petrol inboards to our Mercury Diesel products. MerCruiser inboards are built using the highest-quality materials such as stainless steel, the most reliable systems such as closed-cooling for added corosion protection and the best warranty coverage on the water. All to make your ownership experience enjoyable, simple and worry-free.

Power 300HP (224 kW)
Full Throttle Range 4600 -5000 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 III Cool Fuel
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 Single Point Air-Actuated
Exhaust System Exhaust System Iron Manifold with EDP-coated Dry-joint Exhaust Elbow
Cooling System Closed Cooling, Long Life 5-Year Anti-Freeze, Brass Sea Water Pump
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, Transmission Temperature, Low Sea Water Pressure, Low Voltage, Over-rev control, Knock Control
Velvet Drive 5000A 1.25, 1.5, 2.0, 2.5, 2.8:1
Velvet Drive 5000V 1.5, 2.0, 2.5:1
Velvet Drive 71C 1.0:1
Velvet Drive 72C 1.0:1
ZF 63A (Available w/DTS) 1.5, 2.0, 2.5, 2.7:1
ZF 63 IV (Available w/DTS) 1.5, 2.0, 2.5:1
Dimensions (LxWxH) in 43x 30 x 22
Dimensions (LxWxH) mm 1092 x 740 x 559
Weight w/ Velvet Drive 948 (lbs.) / 431 (kg)
Full Closed Cooling System Standard
Digital Throttle and Shift Standard