Mercury Mercruiser engines
Gas Sterndrive 496 MAG HO 425 hp
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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).
Boating Benefits
- Mercury-exclusive PCM 555 high-speed microprocessor that optimizes fuel mixture, knock control and ignition timing independently for each cylinder, resulting in improved, precise performance. PCM 555 also enables the connection of SmartCraft components.
- 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.
- Forged-steel connecting rods improve strength and durability.
- Cast-aluminum oil pan which solidifies the engine block for increased rigidity.
- Exclusive quick oil drain system that eliminates the need for a pump, simplifying routine maintenance.
- Engine Guardian™ that not only detects and alerts boater of an engine problem, it processes the data and reduces power to a maximum, safe level that allows the boater to continue operation.
- Exclusive drive lube monitor conveniently located atop the engine for easy access.
- Exclusive Mercury MerCruiser® service dealer network.
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496 MAG HO 425 hp Specifications
| Propshaft Horsepower: | | 425 (318 kW) |
| Displacement (Litre/CID): | | 8.1/496 |
| Cylinders: | | V-8 |
| Bore & Stroke(in/mm): | | 4.25 x 4.38/108 x 111 |
| Compression Ratio: | | 9.1:1 |
| Fuel System: | | MPI |
| Full Throttle RPM Range: | | 4600-5000 |
| Ignition Type: | | PCM 555 Distributorless |
| Alternator (amps/watts): | | 65 amp |
| Length (in/cm): | | 35/89 |
| Width (in/cm): | | 33/84 |
| Height (in/cm): | | 24/61 |
| Weight (lbs/kg) - Alpha: | | N/A |
| Weight (lbs/kg) - Bravo One: | | 1199/544 |
| Weight (lbs/kg) - Bravo Two: | | 1214/551 |
| Weight (lbs/kg) - Bravo Three: | | 1224/555 |
| Transmission Ratios | | |
| Gear Ratio - Alpha Drive (primary/optional/high altitude) | | N/A |
| Gear Ratio - Bravo One (primary/optional/high altitude) | | 1.5/1.36/1.65 |
| Gear Ratio - Bravo Two (primary/optional/high altitude) | | 1.81/2.0/2.2 |
| Gear Ratio - Bravo Three (primary/optional/high altitude) | | 1.81/2.0/2.2 |
Standard Features
- Audio warning system
- Closed-cooling
- Stainless steel exhaust elbows
- Ceramic, EDP-coated and painted exhaust manifolds
- High-temperature spark plug wires
- Knock-control sensor
- MerCathode®
- Platinum-tipped spark plugs
- Power steering
- Easy engine oil drain system
- Remote oil filter
- Serpentine belt
- 75 mm throttle body
- Water-cooled fuel system
- Air-actuated, single-point drain system - hand air pump included with engine
- Water/fuel separator
- Seawater pump material - brass
Optional Features
Drive available on
Bravo One XR
Bravo One XZ
Bravo One
Bravo Two
Bravo Three
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Visit our other Mercury Marine Equipment
Gas Sterndrives
850 hp - HP900 SC /
550 hp - HP 575 SCi /
470 hp - HP500 Bulldog
470 hp - HP500 EFI /
425 hp - 496 MAG HO /
375 hp - 496 MAG
350 hp - Scorpion 377 /
320 hp - MX 6.2 MPI Horizon /
320 hp - MX 6.2 MPI
300 hp - 350 MAG MPI Horizon /
300 hp - 350 MAG MPI
Drive Options
Dry-Sump Six /
Bravo One XR /
Bravo One XZ
Bravo One /
Bravo Two /
Bravo Three /
Alpha
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Mercury
3101 Nasa Road One - Seabrook, Texas 77586
Tel: (281) 450-4734 - Fax: (281) 326-2855 - bbul980148@gmail.com
Bullock Marine offers new & used powerboats as well as performance boat accessories: skater, fountain, eliminator, Mercruiser Mercury Marine (competition - racers & performance propellers, Zero Effort Controls™, K-Plane™ high performance trim tabs, Mercury Racing Trim Indicators™, high performance engines, competition drive, etc.) cigarette boat, welcraft, scarab, donzi boats, catamaran raceboat, high speed twin hull, etc.
Bullock Marine is an authorized dealer for Douglas Marine Skater Powerboat, Regy Fountain powerboat & sport boat, Eliminator powerboat & sport boat, and Mercury Mercruiser marine engines, Drive & accessories.
Gas Sterndrive 496 MAG HO 425 hp Mercury marine engine 425 hp mercruiser marine engine 496 MAG gas engine 496 MAG HO 425 Bullock Marine skater fountain eliminator performance boat boating race boat cigarette racing boats welcraft boat scarab powerboats eliminator powerboat skater raceboats
Gas Sterndrive 496 MAG HO 425 hp Mercury marine engine 425 hp mercruiser marine engine 496 MAG gas engine 496 MAG HO 425 Bullock Marine skater fountain eliminator performance boat boating race boat cigarette racing boats welcraft boat scarab powerboats eliminator powerboat skater raceboats
Gas Sterndrive 496 MAG HO 425 hp Mercury marine engine 425 hp mercruiser marine engine 496 MAG gas engine 496 MAG HO 425 Bullock Marine skater fountain eliminator performance boat boating race boat cigarette racing boats welcraft boat scarab powerboats eliminator powerboat skater raceboats