Mercruiser Sterndrive 8.2 MAG HO - MERCRUISER MULTIPORT INJECTED (MPI) STERNDRIVE ENGINES are built to exceed your expectations with impressive technologies that give you instant peace of mind.

Power430HP (321 kW)
Full Throttle Range4600 - 5000 RPM
Displacement502 CID (8.2L)
Engine TypeV8
Bore & Stroke4.47" X 4.00" (113.5mm X 101.6mm)
Compression Ratio8.75:1
Fuel Requirement87 Octane (R+M)/2
Engine Control SystemPCM 555 with SmartCraft CAN Capability
Fuel Delivery SystemGen III Cool Fuel
Fuel Injection SystemSequential Multi-Point Electronic Fuel Injection
Induction SystemHigh-inertia Induction System
Ignition SystemDistributorless Ignition w/Knock Control and Platinum Spark Plugs
Charging System65 Amp/917 Watt Alternator
Water Drain SystemSingle Point Air-Actuated
Exhaust SystemTuned Runner Exhaust Manifolds with 316 Stainless Steel Tubular Dry Joint Elbows
Cooling SystemClosed Cooling, Long Life 5-Year Anti-Freeze, Brass Sea Water Pump
Accessory Drive SystemSerpentine Belt, Stainless Steel Spring Automatic Tensioner
Recommended Engine OilMerCruiser Full Synthetic Engine Oil - SAE 20W-40
Engine Guardian SystemLow Oil Pressure, High Coolant Temperature, High Exhaust Manifold Temperature, Low Drive Lube, Low Sea Water Pressure, Low Voltage, Over-rev control, Knock Control
Bravo One, Bravo One X Ratios1.36, 1.50, 1.65 (high altitude)
Bravo Two, Bravo Two X Ratios1.81, 2.00, 2.20 (high altitude)
Bravo Three, Bravo Three X Ratios1.81, 2.00, 2.20 (high altitude)
Bravo One XR Ratios1.26, 1.35, 1.50
Bravo Three XR Ratios1.65, 2.00
Weight1080lbs / 490kg
Digital Throttle and ShiftStandard


Horse Power (hp)
  • 430

Engine 1

Engine Make Mercruiser
Horse Power 430
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