Mercury MerCruiser 8.2L MAG HO (430hp)

Mercury Marine

Mercury MerCruiser 8.2L MAG HO (430hp)

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Engine Type: V8 Big Block

Engine Specifications

430.0 hp

Power

8.2 litres

Displacement

499 kg

Dry Weight

Description

The legendary Big Block. The Mercury MerCruiser 8.2L V8 is the pinnacle of sterndrive power, designed for larger cruisers and high-performance runabouts that demand massive torque. Despite its size, it is remarkably easy to maintain and smooth to operate.

Key Features:

  • Massive Torque: The 8.2L displacement provides the pure grunt needed to move large vessels with authority.
  • Standard Closed Cooling: Comes with a factory-installed freshwater cooling system to prevent internal corrosion and ensure consistent operating temperatures.
  • Engine Guardian System: Monitors critical sensors and protects the engine from damage if parameters go out of range.
  • Multi-Port Injection (MPI): Delivers precise fuel metering for instant starting and smooth idle.
  • SeaCore Ready: Available with the SeaCore system for the ultimate in saltwater protection.

Specifications:

  • 430hp (321kW)
  • 8.2L V8 Big Block
  • High Output (HO)
  • Standard Closed Cooling

Built for the Long Run

Every engine undergoes brutal testing (from log strikes to saltwater spray booths) to ensure it performs in the harshest environments.

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Adventures Backed By Expertise

Technical Details

Corrosion Defense

Constructed with Mercury's proprietary XK360 low-copper aluminium alloy and sealed with the MercFusion Paint Process. This system uses electro-deposition priming and a hard powder top coat to provide the industry’s best protection against saltwater intrusion.

Extreme Validation

Every engine design endures brutal testing protocols, including vicious log strikes, saltwater spray booths, high-humidity chambers, and thermal cycling between extreme hot and cold water temperatures. Powerheads are run at wide-open throttle for thousands of hours to prove long-term durability.

High-Displacement Power:

Mercury engines utilise large-displacement blocks to generate torque effortlessly. This "work smarter, not harder" approach ensures the engine is never stressed, even when pushing heavy loads.

SmartCraft Integration:

Engines are compatible with the SmartCraft digital suite. This provides access to Engine Guardian (which monitors sensors to protect the engine) and Active Trim (GPS-based automatic trim control) for optimized performance and fuel economy.