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.

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Corrosion Protection.

Corrosion Protection.

The freshwater closed-cooling system (standard) dramatically limits potential corrosion. In fact, Mercury® is so bullish about the anti-corrosion technology built into these engines, we offer a standard four-year limited corrosion warranty in addition to the three-year limited factory-backed warranty.

Mercury Joystick Piloting for Inboards.

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.

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.

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.

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

  • HP / 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)
    • 509 kg
    Compatible drives
    • ZF 63A Down Angle
    • ZF 63IV V-Drive
    Print Compare With Other Products
  • HP / 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)
    • 509 kg
    Compatible drives
    • ZF 63A Down Angle
    • ZF 63IV V-Drive
    Print Compare With Other Products
  • HP / 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 Products
  • HP / 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 Products
  • HP / 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
    Print Compare With Other Products
  • HP / 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 Products
  • HP / kW
    • 300 / 224
    Maximum RPM (WOT)
    • 4600 - 5000
    Engine type
    • V8
    Displacement (L)
    • 5.7
    Displacement (CID/L)
    • 350
    Fuel delivery system
    • TKS Carb
    Cooling system
    • Closed Cooling Kit
    Weight (engine only)
    • 370 kg
    Compatible drives
    • ZF / Velvet
    Print Compare With Other Products
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