Yanmar Marine

Products

496 MAG HO

The 425 hp 496 MAG HO is the most powerful MerCruiser engine available in our standard lineup. A special camshaft profile and unique fuel and spark calibration combine to provide an additional 50 hp and a 200 RPM higher operating range compared to the 496 MAG. Its massive power is coupled to a beefy Bravo X series drive with a number of performance drive options available for faster boats. Even with the additional horsepower, the 496 MAG HO is amazingly well-mannered and reliable. Standard low-restriction exhaust with stainless steel elbows, along with our most sophisticated spark and fuel injection systems, deliver outstanding acceleration and top speed.

Specifications▼

Features

 

 

 

 

 

 

 

 

 

 

 

 

Compatible Drives

Bravo One, X, XR
Bravo Two, X
Bravo Three, X, XR

496 MAG HO - 425 hp

Reliability

  • PCM 555 sequential fuel injection and high energy distributorless ignition system ensure reliable starts and outstanding performance, year after year
  • Exclusive Engine Guardian protection senses potential problems and virtually eliminates the chance for engine damage due to overheating, low oil pressure, or low drive lube
  • Cartridge-type water-separating fuel filter helps protect fuel system and engine against damage
  • Proven GM cast iron big block V8 power for years of reliable operation
  • 316 Stainless Steel dry-joint exhaust elbows better resist high temperature and corrosion and improve exhaust flow for more power
  • Brass sea water pump housing improves life and better resists damage from running dry

Performance

  • Long individual runner intake manifold design provides optimum torque and horsepower for demanding marine applications
  • Tuned runner exhaust manifold lowers exhaust backpressure for best torque and power
  • Sequential Multi-Port Fuel Injection provides easy starts, cold or hot, and automatically adjusts for changes in temperature, weather, or altitude for terrific performance in any environment
  • High Energy distributorless ignition with knock control maximizes power and protects against low quality fuels
  • Standard anti-feedback power steering helps reduces operator fatigue and makes boat handling a breeze
  • Low restriction flame arrestor for added horsepower and torque

Easy Ownership

  • 3-year/300 hour maintenance interval on many periodic service items saves time and money
  • Convenient top-mounted remote oil filter and threaded dipstick tube make oil changes cleaner and keep periodic servicing quick and simple
  • Color-coded service points makes checking fluid levels simple and straightforward
  • Operates on easy to find, less expensive 87 octane fuel
  • Engine-mounted drive lube monitor for easy lube check or add from inside the boat
  • Long-life anti-freeze only requires replacement every 5 years
  • Single point air-actuated water drain system standard

Technology

  • The DTS (Digital Throttle & Shift) option eliminates push-pull cables and related maintenance while providing silky-smooth operation and unsurpassed responsiveness. DTS provides an unprecedented level of control and precision for docking and low-speed maneuvering. Available as an additional option, precision SmartTow speed control includes an easy-to-use launch control that makes pulling skiers and wakeboarders as simple as pushing a button
  • Standard features with DTS are: Autosynch of multiple engines, SmartStart, Shift Protection, Multiple Helm capability, and Shadow Technology for triple and quad engine installations
  • MerCathode galvanic corrosion prevention system offers unmatched active electronic corrosion protection
  • 496 MAG and 496 MAG HO engines are designed to display engine information on your choice of analog or SmartCraft digitally-driven gauges and displays