Mercury MerCruiser
496 MAG HO (425-hp)
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Mercury MerCruiser 496 MAG HO (425-hp) Mercury MerCruiser 496 MAG HO (425-hp)
The new high-tech 496 MAG HO (high-output version) represents the next generation of powerful, smart, virtually maintenance-free engines. The PCM 555 microprocessor is built right in, so you can take advantage of everything SmartCraft™ has to offer in the way of increased performance and convenience. And by incorporating Horizon™ engine technology, it offers a 3-year extended maintenance interval (except for periodic fluid-level checks and seasonal oil and filter changes).

Key Features

  • Compatible Drives: Bravo One X, XR, Bravo Two X, Bravo Three X, XR
  • Distributorless ignition system that improves timing accuracy and eliminates mechanical timing adjustments.
  • Closed cooling with 5-year coolant.
  • Redesigned exhaust system with aluminum manifolds and stainless steel elbows that is 65 percent lighter and more corrosion-resistant.
  • Dry-joint technology that reduces the potential for water leakage in exhaust components and improves corrosion resistance in the exhaust system.
  • Innovative new single-point air-actuated raw water drain system, which enables boaters to extend their boating season into the cold months.
  • Bronze seawater pump for longer life and more durability.
  • Billet steel special profile camshaft with roller followers provide quiet operation and increased performance.
  • Platinum-tipped spark plugs to ensure long life and trouble-free starts.

Mercury MerCruiser 496 MAG HO (425-hp) (Inboard) Specifications
Horsepower 425-hp
Warranty 3 Years
Displacement (cu/cc) 496.00 cu / 8,127.98 cc
Number of Cylinders 8 Cylinders
Configuration V8
Fuel Delivery Fuel Injected
Cooling System Raw Water
Weight (lbs/kg) 1,199.00 lbs / 543.86 kg
Charging System 65 A
Length/width/height 35 in / 33 in / 24 in
Full Throttle RPM 5000


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