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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 on Duals, 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

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.

Repower Financing.

Repower Financing.

With Mercury Repower Financing, you can easily power up everything from fishing boats, to runabouts, to cruisers with flexible financing on the engine. You can also choose to finance rigging, gauges, controls and even labor. Mercury Repower Financing offers low rates and low monthly payments to fit a boater’s budget.

Click here for more information and get the performance you want!

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.

6,000 hours in the Bahamas

6,000 hours in the Bahamas

Since its introduction to Mercury’s line of FourStroke engines, the 150hp has proved a valuable player in saltwater markets. Recently, Bernard Sweeting, an angler from Spanish Wells, St. George’s Cay, Bahamas, reported that his 150hp FourStroke reached more than 6,000 hours in commercial application, an impressive feat given the rough conditions that accompany commercial outboard use.

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
    Air induction
    • Performance-Tuned Scroll Intake Manifold
    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) or 90 RON 10% Ethanol Maximum
    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 on Duals
    • 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
    CARB star rating
    • 3
    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

Performance Tests

Read the reviews.

Mercury engineering reports and performance data. All available on-line for your review.

BHB - Boat House Bulletin Review
Test Date Engine Boat Prop Type
5/2016 150 hp FourStroke Crestliner - 2200 Bay Vengeance® BHB -
6/2016 150 hp FourStroke Crestliner - 1850 Sportfish Tempest® Plus BHB -
2/2016 150 hp FourStroke Mako - 21 LTS Tempest® Plus BHB -
2/2016 150 hp FourStroke Zodiac - 650 Rec Pro Enertia® BHB -
11/2013 150 hp FourStroke Tracker - Targa V-18 Combo Enertia® BHB -
8/2015 150 hp FourStroke Hewescraft - 210 Sea Runner ET HT Enertia® BHB -
8/2015 150 hp FourStroke Smoker Craft - 182 Ultima SE Black Max® BHB -
7/2015 150 hp FourStroke Harris Flotebote - 240 Cruiser Enertia® BHB -
8/2015 150 hp FourStroke Avalon - Windjammer 25 Enertia® BHB -
7/2015 150 hp FourStroke Crestliner - 1850 Raptor Tempest® Plus BHB -
4/2015 150 hp FourStroke Crestliner - 2000 Bay Vengeance® BHB -
4/2015 150 hp FourStroke Crestliner - 2200 Bay Vengeance® BHB -
6/2015 150 hp FourStroke Crestliner - 1750 Super Hawk Black Max® BHB -
11/2013 150 hp FourStroke Sun Tracker - Party Barge 22 XP3 DLX Enertia® BHB -
11/2013 150 hp FourStroke Sun Tracker - Party Barge 24 XP3 DLX Enertia® BHB -
Test Date: 5/2016
Engine: 150 hp FourStroke
Boat: Crestliner - 2200 Bay
Prop: Vengeance®
Type: BHB -
Test Date: 6/2016
Engine: 150 hp FourStroke
Boat: Crestliner - 1850 Sportfish
Prop: Tempest® Plus
Type: BHB -
Test Date: 2/2016
Engine: 150 hp FourStroke
Boat: Mako - 21 LTS
Prop: Tempest® Plus
Type: BHB -
Test Date: 2/2016
Engine: 150 hp FourStroke
Boat: Zodiac - 650 Rec Pro
Prop: Enertia®
Type: BHB -
Test Date: 11/2013
Engine: 150 hp FourStroke
Boat: Tracker - Targa V-18 Combo
Prop: Enertia®
Type: BHB -
Test Date: 8/2015
Engine: 150 hp FourStroke
Boat: Hewescraft - 210 Sea Runner ET HT
Prop: Enertia®
Type: BHB -
Test Date: 8/2015
Engine: 150 hp FourStroke
Boat: Smoker Craft - 182 Ultima SE
Prop: Black Max®
Type: BHB -
Test Date: 7/2015
Engine: 150 hp FourStroke
Boat: Harris Flotebote - 240 Cruiser
Prop: Enertia®
Type: BHB -
Test Date: 8/2015
Engine: 150 hp FourStroke
Boat: Avalon - Windjammer 25
Prop: Enertia®
Type: BHB -
Test Date: 7/2015
Engine: 150 hp FourStroke
Boat: Crestliner - 1850 Raptor
Prop: Tempest® Plus
Type: BHB -
Test Date: 4/2015
Engine: 150 hp FourStroke
Boat: Crestliner - 2000 Bay
Prop: Vengeance®
Type: BHB -
Test Date: 4/2015
Engine: 150 hp FourStroke
Boat: Crestliner - 2200 Bay
Prop: Vengeance®
Type: BHB -
Test Date: 6/2015
Engine: 150 hp FourStroke
Boat: Crestliner - 1750 Super Hawk
Prop: Black Max®
Type: BHB -
Test Date: 11/2013
Engine: 150 hp FourStroke
Boat: Sun Tracker - Party Barge 22 XP3 DLX
Prop: Enertia®
Type: BHB -
Test Date: 11/2013
Engine: 150 hp FourStroke
Boat: Sun Tracker - Party Barge 24 XP3 DLX
Prop: Enertia®
Type: BHB -

See All Performance Tests

Documents

Buy the Books
Buy the Books

You can order all available Mercury literature online or through any authorized Mercury dealer. Please have your outboard or sterndrive serial number before placing the order.

  • Operation, Maintenance, and Warranty Manuals
  • Parts Manual
  • Service Manual

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