Mercury® MerCruiser®
Inboards
One size doesn't fit all
Proven technology, rock-solid reliability and an unbeatable combination of performance and fuel efficiency.
- HP / kW 425 / 317
- Maximum RPM (WOT) 4400 - 4800
- Engine type V8
- Displacement (L) 8.2
- Fuel delivery system Multi-point Electronic Fuel Injection (MPI), Sequential Fuel Injection with DTS
The specifications displayed here may not be indicative of the entire engine family; click on the “See All Models and Specs” link to view the specs in detail.
Joystick Piloting for Inboards.
The only joystick piloting system that’s compatible with gasoline or diesel inboard and tow sport engines.
The only joystick piloting system for single-inboard boats.
Many features available to make your tow sport adventures even more amazing - click here to find out more!
Fuel-Efficient.
The Mercury MerCruiser 6.2L offers exceptional fuel efficiency. Wide band oxygen sensors continuously monitor oxygen levels, which enables the engine control module to deliver precisely the correct amount of fuel. The result is fuel economy that stretches your boat’s range and your dollar.
Power & Performance.
High-displacement volume and premium MPI fuel injection combine to deliver outstanding acceleration, instant planing and smooth performance throughout the rpm band. Mercury® SmartCraft® Digital Throttle & Shift is standard, providing precision throttle response and effortless steering.
Durable & Reliable.
Mercury’s Engine Guardian continually monitors critical sensors for any sign of a problem and immediately takes action, while the water-cooled Cool Fuel delivery system on the 8.2L Inboard engine prevents vapor lock. Rugged construction, including stainless-steel exhaust, ensures long-term, hassle-free operation.
Specifications
Mercury® MerCruiser®: Inboards
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Print Compare With Other ProductsHP / kW - 425 / 317
Maximum RPM (WOT) - 4400 - 4800
Engine type - V8
Displacement (L) - 8.2
Bore and stroke - 4.47 x 4.00" / 113.5 x 101.6 mm
Compression ratio - 8.75:1
Recommended fuel - Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
Engine control system - PCM 09 with SmartCraft CAN capability OBD-M diagnostics Dual oxygen sensors
Fuel delivery system - Multi-point Electronic Fuel Injection (MPI)
- Sequential Fuel Injection with DTS
Air induction - High inertia induction system
Ignition - Distributorless ignition with knock control
Alternator amp / Watt - 65 amp / 917 watt
Water drain system - Single point air actuated
Exhaust system - Tuned runner exhaust manifolds with 316 stainless steel tubular dry joint elbows
Cooling system - Brass sea water pump
- Closed cooling
- Long life 5-year antifreeze
Accessory drive system - Auto-tensioner
- Serpentine belt
Recommended oil - NMMA Certified FCW 25W-40 Synthetic Blend
Engine guardian system - SmartCraft Engine Guardian
Dimensions (L x W x H) - 35 x 33 x 24" / 878 x 838 x 610 mm
Weight (engine only) - 1,122 lbs / 509 kg
Compatible drives - ZF 63A Down Angle
- ZF 63IV V-Drive
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Print Compare With Other ProductsHP / kW - 375 / 280
Maximum RPM (WOT) - 4200 - 4600
Engine type - V8
Displacement (L) - 8.2
Bore and stroke - 4.47 x 4.00" / 113.5 x 101.6 mm
Compression ratio - 8.75:1
Recommended fuel - Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
Engine control system - PCM 09 with SmartCraft CAN capability OBD-M diagnostics Dual oxygen sensors
Fuel delivery system - Multi-point Electronic Fuel Injection (MPI)
- Sequential Fuel Injection with DTS
Air induction - High inertia induction system
Ignition - Distributorless ignition with knock control
Alternator amp / Watt - 65 amp / 917 watt
Water drain system - Single point air actuated
Exhaust system - Tuned runner exhaust manifolds with 316 stainless steel tubular dry joint elbows
Cooling system - Brass sea water pump
- Closed cooling
- Long life 5-year antifreeze
Accessory drive system - Auto-tensioner
- Serpentine belt
Recommended oil - NMMA Certified FCW 25W-40 Synthetic Blend
Engine guardian system - SmartCraft Engine Guardian
Dimensions (L x W x H) - 35 x 33 x 24" / 878 x 838 x 610 mm
Weight (engine only) - 1,122 lbs / 509 kg
Compatible drives - ZF 63A Down Angle
- ZF 63IV V-Drive
-
Print Compare With Other ProductsHP / kW - 350 / 261
Maximum RPM (WOT) - 5000-5400
Engine type - V8, 2-valve/cylinder pushrod
Displacement (L) - 6.2
Bore and stroke - 4.0 x 3.75" / 101.6 x 95.25 mm
Fuel requirement - 90 RON 10% Ethanol Maximum
- Unleaded Regular 87 Octane Minimum (R+M/2)
Engine control system - SmartCraft PCM 112
- Standard SmartCraft with DTS
Fuel delivery system - Computer controlled Multi-Port Electronic Fuel Injection (MPI)
Starting - Electric (turn-key)
- Smart Start Electric
Air induction - Performance-Tuned Scroll Intake Manifold
Ignition - SmartCraft PCM 112 Digital Inductive
Alternator amp / Watt - Fully regulated belt-driven 70 amp (882 watt)
Water drain system - Air Actuated "Season Extender"
Exhaust system - Through transom
Cooling system - Fresh water cooled (closed cooling)
Lubrication system - Integrated wet sump
Recommended oil - NMMA Certified FCW 25W-40 Synthetic Blend
Engine guardian system - SmartCraft Engine Guardian
Gear shift - F-N-R
Transmission and Ratio - 63 A: 1.216, 1.5:1, 2.0:1, 2.5:1
- 63 IV: 1.5:1, 2.0:1, 2.5:1
Dimensions (L x W x H) - 32 x 30 x 22" / 813 x 762 x 559 mm
Weight (engine only) - 862 lbs / 391 kg
-
Print Compare With Other ProductsHP / kW - 350 / 261
Maximum RPM (WOT) - 5000-5400
Engine type - V8, 2-valve/cylinder pushrod
Displacement (L) - 6.2
Bore and stroke - 4.0 x 3.75" / 101.6 x 95.25 mm
Fuel requirement - 90 RON 10% Ethanol Maximum
- Unleaded Regular 87 Octane Minimum (R+M/2)
Engine control system - SmartCraft PCM 112
- Standard SmartCraft with DTS
Fuel delivery system - Computer controlled Multi-Port Electronic Fuel Injection (MPI)
Starting - Electric
- Smart Start Electric
Air induction - Performance-Tuned Scroll Intake Manifold
Ignition - SmartCraft PCM 112 Digital Inductive
Alternator amp / Watt - Fully regulated belt-driven 70 amp (882 watt)
Water drain system - Air Actuated "Season Extender"
Exhaust system - Through transom
Cooling system - Fresh water cooled (closed cooling)
Lubrication system - Integrated wet sump
Recommended oil - NMMA Certified FCW 25W-40 Synthetic Blend
Engine guardian system - SmartCraft Engine Guardian
Gear shift - F-N-R
Transmission and Ratio - 63 A: 1.216, 1.5:1, 2.0:1, 2.5:1
- 63 IV: 1.5:1, 2.0:1, 2.5:1
Dimensions (L x W x H) - 28 x 30 x 22" / 696 x 740 x 559 mm
Weight (engine only) - 862 lbs / 391 kg
-
Print Compare With Other ProductsHP / kW - 300 / 224
Maximum RPM (WOT) - 5000-5400
Engine type - V8, 2-valve/cylinder pushrod
Displacement (L) - 6.2
Bore and stroke - 4.0 x 3.75" / 101.6 x 95.25 mm
Fuel requirement - 90 RON 10% Ethanol Maximum
- Unleaded Regular 87 Octane Minimum (R+M/2)
Engine control system - SmartCraft PCM 112
- Standard SmartCraft with DTS
Fuel delivery system - Computer controlled Multi-Port Electronic Fuel Injection (MPI)
Starting - Electric (turn-key)
- Smart Start Electric
Air induction - Performance-Tuned Scroll Intake Manifold
Ignition - SmartCraft PCM 112 Digital Inductive
Alternator amp / Watt - Fully regulated belt-driven 70 amp (882 watt)
Water drain system - Air Actuated "Season Extender"
Exhaust system - Through transom
Cooling system - Fresh water cooled (closed cooling)
Lubrication system - Integrated wet sump
Recommended oil - NMMA Certified FCW 25W-40 Synthetic Blend
Engine guardian system - SmartCraft Engine Guardian
Gear shift - F-N-R
Transmission and Ratio - 63 A: 1.216, 1.5:1, 2.0:1, 2.5:1
- 63 IV: 1.5:1, 2.0:1, 2.5:1
Dimensions (L x W x H) - 32 x 30 x 22" / 813 x 762 x 559 mm
Weight (engine only) - 862 lbs / 391 kg
-
Print Compare With Other ProductsHP / kW - 300 / 224
Maximum RPM (WOT) - 5000-5400
Engine type - V8, 2-valve/cylinder pushrod
Displacement (L) - 6.2
Bore and stroke - 4.0 x 3.75" / 101.6 x 95.25 mm
Fuel requirement - 90 RON 10% Ethanol Maximum
- Unleaded Regular 87 Octane Minimum (R+M/2)
Engine control system - SmartCraft PCM 112
- Standard SmartCraft with DTS
Fuel delivery system - Computer controlled Multi-Port Electronic Fuel Injection (MPI)
Starting - Electric (turn-key)
- Smart Start Electric
Air induction - Performance-Tuned Scroll Intake Manifold
Ignition - SmartCraft PCM 112 Digital Inductive
Alternator amp / Watt - Fully regulated belt-driven 70 amp (882 watt)
Water drain system - Air Actuated "Season Extender"
Exhaust system - Through transom
Cooling system - Fresh water cooled (closed cooling)
Lubrication system - Integrated wet sump
Recommended oil - NMMA Certified FCW 25W-40 Synthetic Blend
Engine guardian system - SmartCraft Engine Guardian
Gear shift - F-N-R
Transmission and Ratio - 63 A: 1.216, 1.5:1, 2.0:1, 2.5:1
- 63 IV: 1.5:1, 2.0:1, 2.5:1
Dimensions (L x W x H) - 28 x 30 x 22" / 696 x 740 x 559 mm
Weight (engine only) - 862 lbs / 391 kg
