Inboards
this is a great engine!
| Power | 320HP (235 kW) |
|---|---|
| Full Throttle Range | 4600 - 5000 RPM |
| Displacement | 377 CID (6.2L) |
| Engine Type | V8 |
| Bore & Stroke | 4.00" X 3.75" (101mm X 95mm) |
| Compression Ratio | 9.0:1 |
| 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-piece Long 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 | Closed Cooled Iron Manifold with Ceramic 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 |
| Dimensions (LxWxH) in | 43 x 30 x 22 |
| Dimensions (LxWxH) mm | 1092 x 740 x 559 |
| Digital Throttle & Shift | Standard |
| 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 |
| Weight (lbs./kg) | 948/431 |
| Full Closed Cooling System | Standard |
| Power | 300HP (221 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 | 3-Point Manual |
| Exhaust System | Iron Manifold with Ceramic Coated Dry-joint Exhaust Elbow |
| Cooling System | Thermostatically Controlled, Raw Water, 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 |
| 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 (lbs./kg) | 860/390 |
| Full Closed Cooling System | Optional |
| Digital Throttle & Shift | Standard |

The 5.7 MPI Inboard produces 300 hp and excellent low-end torque from its time-tested V-8, making it a great choice for a variety of cruisers and houseboats. Fitted with our Multiport Injection (MPI) and advanced engine control systems, the 5.7 MPI a solid and reliable performer. Like all MerCruiser inboards, the 5.7 MPI is available with a large variety of popular transmissions to fit virtually any application. Available DTS (Digital Throttle & Shift) is mated to a direct-acting electric shift transmission. DTS eliminates cable maintenance and provides consistent and precise throttle and shift control and never requires any adjustment. DTS can automatically synchronize multiple engines, provides shift protection and includes SmartStart digital starting. It also features Transmission Guardian to automatically protect against damage from overheating or low fluid levels.
| Power | 300HP (221 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 |
| 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 (lbs./kg) | 948/431 |
| Full Closed Cooling System | Standard |
| Digital Throttle & Shift | Standard |
The Horizon 5.7 features standard closed cooling and a four-year factory warranty when installed by one of our many Installation Quality-certified boat manufacturers. Producing 300 hp from its time-tested V-8, it makes a great choice for a variety of cruisers and houseboats. Fitted with our Multiport Injection (MPI) and advanced engine control systems, the Horizon 5.7 is the pinnacle of gas inboards. Like all MerCruiser inboards, the Horizon 5.7 is available with a large variety of popular transmissions to fit virtually any application. Available DTS (Digital Throttle & Shift) is mated to a direct-acting electric shift transmission. DTS eliminates cable maintenance and provides consistent and precise throttle and shift control and never requires any adjustment. DTS can automatically synchronize multiple engines, provides shift protection and includes SmartStart digital starting. It DTS also features Transmission Guardian to automatically protect against damage from overheating or low fluid levels.
| Power | 320HP (235 kW) |
|---|---|
| Full Throttle Range | 4600 - 5000 RPM |
| Displacement | 377 CID (6.2L) |
| Engine Type | V8 |
| Bore & Stroke | 4.00" X 3.75" (101mm X 95mm) |
| Compression Ratio | 9.0:1 |
| 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-piece Long 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 |
| Exhaust System | Exhaust System Iron Manifold with EDP-coated Dry-joint Exhaust Elbow |
| Cooling System | Thermostatically Controlled, Raw Water, 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 |
| Dimensions (LxWxH) in | 43 x 30 x 22 |
| Dimensions (LxWxH) mm | 1092 x 740 x 559 |
| Digital Throttle & Shift | Standard |
| 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 |
| Weight (lbs./kg) | 860/390 |
| Full Closed Cooling System | Optional |
The 6.2 MPI Inboard produces 320 hp and an abundance of low-end torque from its custom-built small block architecture, making it a great choice for boats that need a little extra torque to get on plane or for owners just looking for that perfect combination of light weight and power. Fitted with our Multiport Injection (MPI) and advanced engine control systems, the 6.2 MPI is a solid and reliable performer. Like all MerCruiser inboards, the 6.2 MPI is available with a large variety of popular transmissions to fit virtually any application. Available DTS (Digital Throttle & Shift) is mated to a direct-acting electric shift transmission. DTS eliminates cable maintenance and provides consistent and precise throttle and shift control and never requires any adjustment. DTS can automatically synchronize multiple engines, provides shift protection and includes SmartStart digital starting. It also features Transmission Guardian to automatically protect against damage from overheating or low fluid levels.
| Power | 320HP (235 kW) |
|---|---|
| Full Throttle Range | 4600 - 5000 RPM |
| Displacement | 377 CID (6.2L) |
| Engine Type | V8 |
| Bore & Stroke | 4.00" X 3.75" (101mm X 95mm) |
| Compression Ratio | 9.0:1 |
| 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-piece Long 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 | Closed Cooled Iron Manifold with Ceramic 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 |
| Dimensions (LxWxH) in | 43 x 30 x 22 |
| Dimensions (LxWxH) mm | 1092 x 740 x 559 |
| Digital Throttle & Shift | Standard |
| 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 |
| Weight (lbs./kg) | 948/431 |
| Full Closed Cooling System | Standard |

The Horizon 6.2 features standard closed cooling and a four-year factory warranty when installed by one of our many Installation Quality-certified boat manufacturers. Producing 320 hp from its custom-built small block architecture, it makes a great choice for boats that need a little extra torque to get on plane or for owners just looking for that perfect combination of light weight and power. Fitted with our Multiport Injection (MPI) and advanced engine control systems, the Horizon 6.2 is the pinnacle of gas inboards. Like all MerCruiser inboards, the Horizon 6.2 is available with a large variety of popular transmissions to fit virtually any application. Available DTS (Digital Throttle & Shift) is mated to a direct-acting electric shift transmission. DTS eliminates cable maintenance and provides consistent and precise throttle and shift control and never requires any adjustment. DTS can automatically synchronize multiple engines, provides shift protection and includes SmartStart digital starting. DTS also features Transmission Guardian to automatically protect against damage from overheating or low fluid
| Power | 420HP (309 kW) |
|---|---|
| Full Throttle Range | 4400-4800 RPM |
| Displacement | 496 CID (8.1L) |
| Engine Type | V8 |
| Bore & Stroke | 4.25" X 4.38" (108mm X 111mm) |
| Compression Ratio | 9.1:1 |
| Fuel Requirement | 87 Octane (R+M)/2 |
| Engine Control System | PCM 555 with SmartCraft CAN Capability - DTS Optional |
| Fuel Delivery System | Gen III Cool Fuel |
| Fuel Injection System | Sequential Multi-Point Electronic Fuel Injection |
| Induction System | 2-pieceLong Runner intake with 75mm Throttle Body (80mm w/DTS) |
| Ignition System | Distributorless Ignition w/Knock Control and Platinum Spark Plugs |
| Charging System | 65 Amp/917 Watt Alternator |
| Water Drain System | Single Point Air-Actuated |
| Exhaust System | Long Runner Cast iron Manifolds with 316 Stainless Steel Tubular Dry Joint Elbows |
| Cooling System | Closed Cooling, Long Life 5-Year Anti-Freeze, Brass Sea Water Pump |
| Accessory Drive System | Serpentine Belt, Stainless Steel Spring Automatic Tensioner |
| Recommended Engine Oil | MerCruiser Full Synthetic Engine Oil - SAE 20W-40 |
| Engine Guardian System | Low Oil Pressure, High Coolant Temperature, High Exhaust Manifold Temperature, Low Sea Water Pressure, Low Voltage, Over-rev control, Knock Control, Transmission Temperature, Low Transmission Fluid Pressure (DTS Only) |
| ZF 63A (Available w/DTS) | 1.5, 2.0, 2.5,2.7:1 |
| ZF 80 A (Available w/DTS) | 2.85:1 |
| ZF 63 IV (Available w/DTS) | 1.5, 2.0, 2.5:1 |
| Dimensions (LxWxH) in | 47x 33 x 24 |
| Dimensions (LxWxH) mm | 1194 x 838 x 610 |
| Weight (lbs./kg) | 1130/513 |
| Digital Throttle & Shift | Standard |

The 8.1 H.O. inboard boasts 420 big-boat-moving horsepower. Fitted with our most sophisticated Multiport Injection (MPI) and ignition system, the 8.1 H.O. is the pinnacle of gas inboards. Like all MerCruiser inboards, the 8.1 H.O. is available with a large variety of popular transmissions to fit virtually any application. Digital Throttle & Shift (DTS) is available and is mated to a direct-acting electric shift transmission. DTS eliminates cable maintenance and provides consistent and precise throttle and shift control, and never requires any adjustment. DTS can automatically synchronize multiple engines, provides shift protection and provides SmartStart digital starting. DTS also features Transmission Guardian to automatically protect against damage from overheating or low fluid levels.






