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FourStroke
150 hp

Stronger. Lighter. More Durable.

Massive displacement and the lightest 150 hp four-stroke in its class

  • Engine type 8-valve single overhead cam (SOHC), Inline 4
  • Displacement (L) 3.0
  • Full throttle RPM 5000-5800
  • Steering Big Tiller Compatible, Dual cable mechanical, Electro-hydraulic power steering optional, Hydraulic power steering
  • Dry weight *Lightest model available 455 lbs / 206 kg

The specifications displayed here may not be indicative of the entire engine family; click on the “See All Models and Specs” link to view the specs in detail.

See All Models and Specs

Circumnavigating Australia with Mercury 150 FourStrokes.

Circumnavigating Australia with Mercury 150 FourStrokes.

Mark Ratchford is calling it his ‘huge adventure’ which might be an understatement - considering he spent four months on a solo 16,500 km (10,000-mile) circumnavigation of Australia in a 6.5 metre (21-foot) fishing boat powered by twin Mercury 150 FourStroke outboards.

Click here to read about Mark's adventure.

Performance, Durability, Efficiency.

Performance, Durability, Efficiency.

Making 150 horsepower is easy for this 3.0-liter, four-cylinder, single-overhead-cam engine. Its generous displacement lets it churn out power without breaking a sweat. You get exceptional durability and long-term peace of mind.

Compact and Versatile.

Compact and Versatile.

It’s the lightest 150hp four-stroke outboard on the market. Smart design makes the 150hp Mercury FourStroke nearly 20 pounds lighter than its closest four-stroke competitor, and less than a battery weight heavier than a two-stroke. Potential uses for this engine are endless, including bay boats, boats with poling platforms and pontoons with swim platforms.

Calculate your fuel savings

Calculate your fuel savings

The Mercury Fuel Savings Calculator will allow you to easily calculate the possible fuel savings of a Mercury FourStroke outboard!

Choose how you use your boat, select the TwoStroke and FourStroke horsepower - and our tool will show your potential fuel savings. If you're looking to upgrade or add more power, you can even choose different FourStroke and TwoStroke horsepower options!

Calculate your fuel savings

Propped to Perform.

Propped to Perform.

The Mercury Enertia® propeller is the perfect complement to the 150 FourStroke. Designed specifically for large four-stroke outboards with a revolutionary low-diameter/high-blade-area design and cast with the Mercury proprietary X7® propeller alloy, Enertia delivers phenomenal acceleration, top speed and durability.

Easy to Maintain.

Easy to Maintain.

Rather do it yourself? The no-spill oil-change system, an easy-access fuel filter and a lifetime maintenance-free valve train make the Mercury 150 FourStroke the easiest-to-maintain 150hp four-stroke on the market. Scan a QR code under the cowl to link with step-by-step video demonstrations.

Perfect for Repower.

Perfect for Repower.

The compact, lightweight design of the Mercury® 150hp FourStroke engine fits most transoms, including those with narrow engine wells and tight motor spacing. Rig it with mechanical or hydraulic steering, mechanical control and cable systems, and a full complement of analog or SmartCraft® gauges.

Specifications

FourStroke: 150 hp

  • HP / kW
    • 150 / 110
    Engine type
    • 8-valve single overhead cam (SOHC)
    • Inline 4
    Displacement (L)
    • 3.0
    Full throttle RPM
    • 5000-5800
    Fuel induction system
    • Computer Controlled Multi-Port Electronic Fuel Injection (EFI)
    Alternator amp / Watt
    • 60 amp / 756 watt (Belt-Driven)
    Recommended fuel
    • Unleaded Regular 87 Octane Minimum (R+M/2)
    Recommended oil
    • Mercury FourStroke Oil 10W-30
    Engine protection operator warning system
    • SmartCraft Engine Guardian
    Compatible with SmartCraft digital technology
    • Yes
    Starting
    • Electric (turn-key)
    • Smart Start Electric
    Controls
    • Mechanical throttle & shift
    Steering
    • Big Tiller Compatible
    • Dual cable mechanical
    • Electro-hydraulic power steering optional
    • Hydraulic power steering
    Shaft length
    • 20" / 508 mm
    • 25" / 635 mm
    Gearcase ratio
    • 1.92:1
    Dry weight *Lightest model available
    • 455 lbs / 206 kg
    Bore and stroke
    • 4.0 x 3.6" / 102 x 92 mm
    Ignition
    • SmartCraft ECM 70 Digital Inductive
    Fuel system
    • Electronic Fuel Injection (EFI)
    Cooling system
    • Water-cooled with thermostat
    Gear shift
    • F-N-R
    Gearcase options
    • Standard
    Trim system
    • Power Tilt
    • Power Trim
    Exhaust system
    • Through prop
    Counter Rotation
    • Available
    Color
    • Phantom Black
    Lubrication system
    • Wet sump
    Oil Capacity
    • 6.3 qts / 6.0l
    Maximum Trim Range
    • 22° (-6° to 16°)
    Maximum Tilt Range
    • 73° (-6° to 67°)
    Print Compare With Other Products
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