Four Stroke 175-300 HP

Reliability, flexibility, power and efficiency – all within your reach. Backed by decades of marine power innovation and product leadership, Mercury V8 and V6 FourStroke outboards deliver legendary performance and forward-thinking technology. FourStroke outboards are built for any body of water and a wide variety of boats.
The high-displacement, quad-cam design of the V8 and V6 FourStroke powerheads generates plenty of torque, especially at mid-range.
Advanced Range Optimization improves cruise-speed fuel efficiency by automatically adjusting fuel delivery so seamlessly the operator won’t feel or hear it.
Mercury V8 and V6 FourStroke outboards are the lightest in their respective class by at least 10 pounds and mount on 26-inch centers for broader fitment.

Norfolk Marine OUTBOARDS

Intuitive, Innovative Features

Adaptive Speed Control

Adaptive Speed Control maintains a desired rpm regardless of changes in load or conditions without adjustments to the throttle lever position – a first for the outboard industry.

Smooth and Quiet

The V8 and V6 FourStroke engines are quieter and smoother than the leading competitor.

Easy to Maintain

The exclusive Top Cowl Service Door simplifies routine maintenance, letting you check or add engine oil without removing the top cowl. An hour-based maintenance schedule decal is located under the cowl, providing a quick overview of routine maintenance.

Norfolk Marine OUTBOARDS

Four Stroke 175-300 HP Specs

  • 175 HP V6 3.4 L

    Go Farther: Advanced Range Optimization by Mercury Marine uses closed-loop fuel control to precisely adjust the fuel mixture and deliver the best possible efficiency. Keep It Steady: Adaptive Speed Control maintains engine speed (rpm) regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – without having to frequently adjust throttle position, a first for the outboard industry. Lighter by Design: Ounce by ounce, Mercury engineers cut pounds from the FourStroke outboards, ensuring each engine is the lightest in its respective class. Smart Charging: Idle Charge battery-management prevents boaters from draining their batteries while operating multiple electronic devices. When battery voltage is reduced, the engine will automatically increase idle rpm to boost alternator output and recharge low batteries to the proper level.

    HP / kW 175 / 130
    MidSection Conventional MidSection (CMS)
    Engine type V-6
    Displacement (CID/CC) 209 CID
    Displacement (L) 3.4L
    Cylinder Configuration V-6 [64 degree] with Dual Overhead Cam [DOHC] and 24-valves
    Full throttle RPM 5000-5800
    Air induction Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
    Alternator amp / Watt 85-amp (1071 Watt) with Idle Charge
    Recommended fuel Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
    Recommended oil NMMA Certified FCW SAE 10W-30
    Engine protection operator warning system SmartCraft Engine Guardian
    Compatible with SmartCraft digital technology Yes
    Starting Electric Start with SmartStart Protection
    Controls Digital Throttle & Shift (DTS)
    Steering Hydraulic (standard) Power (optional) Big Tiller (optional)
    Shaft length 20” / 508 mm
    25” / 635 mm
    Gearcase ratio 1.85:1
    Dry weight
    *Lightest model available
    475 lbs / 216 kgs
    CARB star rating 3
    Bore and stroke 3.6 in x 3.4 in / 92 mm x 86 mm
    Ignition SmartCraft PCM 112 Digital Inductive
    Cooling system Water-cooled with thermostat
    Gear shift F-N-R
    Gearcase options 4.8″
    Trim system Power trim and tilt
    Exhaust system Through prop
    Color Phantom Black
    Lubrication system Integrated wet sump
    Oil Capacity 7.0 Quarts / 6.6 Liters
    Maximum Trim Range 20° (-6° to 14°)
    Maximum Tilt Range 73° (-6° to 67°)
  • 200 HP V6 3.4L

    Go Farther: Advanced Range Optimization by Mercury Marine uses closed-loop fuel control to precisely adjust the fuel mixture and deliver the best possible efficiency. Keep It Steady: Adaptive Speed Control maintains engine speed (rpm) regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – without having to frequently adjust throttle position, a first for the outboard industry. Lighter by Design: Ounce by ounce, Mercury engineers cut pounds from the FourStroke outboards, ensuring each engine is the lightest in its respective class. Smart Charging: Idle Charge battery-management prevents boaters from draining their batteries while operating multiple electronic devices. When battery voltage is reduced, the engine will automatically increase idle rpm to boost alternator output and recharge low batteries to the proper level.

    HP / kW 200 / 149
    MidSection Conventional MidSection (CMS)
    Engine type V-6
    Displacement (CID/CC) 209 CID
    Displacement (L) 3.4L
    Cylinder Configuration V-6 [64 degree] with Dual Overhead Cam [DOHC] and 24-valves
    Full throttle RPM 5000-5800
    Air induction Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system Electronic Fuel Injection (EFI) Computer Controlled with Ad- vanced Range Optimization
    Alternator amp / Watt 85-amp (1071 Watt) with Idle Charge
    Recommended fuel Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
    Recommended oil NMMA Certified FCW SAE 10W-30
    Engine protection operator warning system SmartCraft Engine Guardian
    Compatible with SmartCraft digital technology Yes
    Starting Electric Start with SmartStart Protection
    Controls Remote Mechanical or Digital Throttle & Shift (DTS)
    Steering Hydraulic (standard) Power (optional) Big Tiller (optional)
    Shaft length 20” / 508 mm
    25” / 635 mm
    Gearcase ratio 1.85:1
    Dry weight
    *Lightest model available
    475 lbs / 216 kgs
    CARB star rating 3
    Bore and stroke 3.6 in x 3.4 in / 92 mm x 86 mm
    Ignition SmartCraft PCM 112 Digital Inductive
    Cooling system Water-cooled with thermostat
    Gear shift F-N-R
    Gearcase options 4.8”
    Trim system Power trim and tilt
    Exhaust system Through prop
    Counter Rotation Available
    Color Phantom Black Pearl Fusion White Cold Fusion White Warm Fusion White
    Lubrication system Integrated wet sump
    Oil Capacity 7.0 Quarts / 6.6 Liters
    Maximum Trim Range 20° (-6° to 14°)
    Maximum Tilt Range 73° (-6° to 67°)
  • 225 HP V6 3.4L

    Go Farther: Advanced Range Optimization by Mercury Marine uses closed-loop fuel control to precisely adjust the fuel mixture and deliver the best possible efficiency. Keep It Steady: Adaptive Speed Control maintains engine speed (rpm) regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – without having to frequently adjust throttle position, a first for the outboard industry. Lighter by Design: Ounce by ounce, Mercury engineers cut pounds from the FourStroke outboards, ensuring each engine is the lightest in its respective class. Smart Charging: Idle Charge battery-management prevents boaters from draining their batteries while operating multiple electronic devices. When battery voltage is reduced, the engine will automatically increase idle rpm to boost alternator output and recharge low batteries to the proper level.

    HP / kW 225 / 168
    MidSection Conventional MidSection (CMS)
    Engine type V-6
    Displacement (CID/CC) 209 CID
    Displacement (L) 3.4L
    Cylinder Configuration V-6 [64 degree] with Dual Overhead Cam [DOHC] and 24-valves
    Full throttle RPM 5200-6000
    Air induction Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system Electronic Fuel Injection (EFI) Computer Controlled with Ad- vanced Range Optimization
    Alternator amp / Watt 85-amp (1071 Watt) with Idle Charge
    Recommended fuel Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
    Recommended oil NMMA Certified FCW SAE 10W-30
    Engine protection operator warning system SmartCraft Engine Guardian
    Compatible with SmartCraft digital technology Yes
    Starting Electric Start with SmartStart Protection
    Controls Remote Mechanical or Digital Throttle & Shift (DTS)
    Steering Hydraulic (standard) Power (optional) Big Tiller (optional)
    Shaft length 20” / 508 mm
    25” / 635 mm
    30” / 762 mm
    Gearcase ratio 1.85:1
    Dry weight
    *Lightest model available
    475 lbs / 216 kgs
    CARB star rating 3
    Bore and stroke 3.6 in x 3.4 in / 92 mm x 86 mm
    Ignition SmartCraft PCM 112 Digital Inductive
    Cooling system Water-cooled with thermostat
    Gear shift F-N-R
    Gearcase options 4.8”
    Trim system Power trim and tilt
    Exhaust system Through prop
    Counter Rotation Available
    Color Phantom Black Pearl Fusion White Cold Fusion White Warm Fusion White
    Lubrication system Integrated wet sump
    Oil Capacity 7.0 Quarts / 6.6 Liters
    Maximum Trim Range 20° (-6° to 14°)
    Maximum Tilt Range 73° (-6° to 67°)
  • 250 HP V8 4.6L

    Go Farther: Advanced Range Optimization by Mercury Marine uses closed-loop fuel control to precisely adjust the fuel mixture and deliver the best possible efficiency. Keep It Steady: Adaptive Speed Control maintains engine speed (rpm) regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – without having to frequently adjust throttle position, a first for the outboard industry. Lighter by Design: Ounce by ounce, Mercury engineers cut pounds from the FourStroke outboards, ensuring each engine is the lightest in its respective class. Smart Charging: Idle Charge battery-management prevents boaters from draining their batteries while operating multiple electronic devices. When battery voltage is reduced, the engine will automatically increase idle rpm to boost alternator output and recharge low batteries to the proper level.

    HP / kW 250 / 186
    MidSection Conventional MidSection (CMS)
    Engine type V-8
    Displacement (CID/CC) 279 CID
    Displacement (L) 4.6L
    Cylinder Configuration V-8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
    Full throttle RPM 5200-6000
    Air induction Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range
    Optimization
    Alternator amp / Watt 85-amp (1071 Watt) with Idle Charge
    Recommended fuel Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
    Recommended oil NMMA Certified FCW SAE 10W-30
    Engine protection operator warning system SmartCraft Engine Guardian
    Compatible with SmartCraft digital technology Yes
    Starting Electric Start with SmartStart Protection
    Controls Remote Mechanical or Digital Throttle & Shift (DTS)
    Steering Hydraulic (standard) Power (optional) Big Tiller (optional)
    Shaft length 20” / 508 mm
    25” / 635 mm
    30” / 762 mm
    Gearcase ratio 1.75:1
    Dry weight
    *Lightest model available
    527 lbs / 239 kgs
    CARB star rating 3
    Bore and stroke 3.6 in x 3.4 in / 92 mm x 86 mm
    Ignition SmartCraft PCM 112 Digital Inductive
    Cooling system Water-cooled with thermostat
    Gear shift F-N-R
    Gearcase options 5.44”
    Trim system Power trim and tilt
    Exhaust system Through prop
    Counter Rotation Available
    Color Phantom Black Pearl Fusion White Cold Fusion White Warm Fusion White
    Lubrication system Integrated wet sump
    Oil Capacity 7.0 Quarts / 6.6 Liters
    Maximum Trim Range 20° (-6° to 14°)
    Maximum Tilt Range 73° (-6° to 67°)
  • 300 HP V8 4.6 L

    Go Farther: Advanced Range Optimization by Mercury Marine uses closed-loop fuel control to precisely adjust the fuel mixture and deliver the best possible efficiency. Keep It Steady: Adaptive Speed Control maintains engine speed (rpm) regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – without having to frequently adjust throttle position, a first for the outboard industry. Lighter by Design: Ounce by ounce, Mercury engineers cut pounds from the FourStroke outboards, ensuring each engine is the lightest in its respective class. Smart Charging: Idle Charge battery-management prevents boaters from draining their batteries while operating multiple electronic devices. When battery voltage is reduced, the engine will automatically increase idle rpm to boost alternator output and recharge low batteries to the proper level.

    HP / kW 300 / 224
    MidSection Conventional MidSection (CMS)
    Engine type V-8
    Displacement (CID/CC) 279 CID
    Displacement (L) 4.6L
    Cylinder Configuration V-8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
    Full throttle RPM 5200-6000
    Air induction Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
    Alternator amp / Watt 85-amp (1071 Watt) with Idle Charge
    Recommended fuel Unleaded Regular 87 Octane Mini- mum (R+M/2) or 90 RON 10% Ethanol Maximum
    Recommended oil NMMA Certified FCW SAE 10W-30
    Engine protection operator warning system SmartCraft Engine Guardian
    Compatible with SmartCraft digital technology Yes
    Starting Electric Start with SmartStart Protection
    Controls Remote Mechanical or Digital Throttle & Shift (DTS)
    Steering Hydraulic (standard) Power (optional)
    Shaft length 20” / 508 mm
    25” / 635 mm
    Gearcase ratio 1.75:1
    Dry weight
    *Lightest model available
    527 lbs / 239 kgs
    CARB star rating 3
    Bore and stroke 3.6 in x 3.4 in / 92 mm x 86 mm
    Ignition SmartCraft PCM 112 Digital Inductive
    Cooling system Water-cooled with thermostat
    Gear shift F-N-R
    Gearcase options 5.44″
    Trim system Power trim and tilt
    Exhaust system Through prop
    Counter Rotation Available
    Color Phantom Black Pearl Fusion White Cold Fusion White Warm Fusion White
    Lubrication system Integrated wet sump
    Oil Capacity 7.0 Quarts / 6.6 Liters
    Maximum Trim Range 20° (-6° to 14°)
    Maximum Tilt Range 73° (-6° to 67°)

Interested In A Four Stroke 175-300 HP?

Norfolk Marine is your premier destination for Mercury Outboard Engines. Discover the power, reliability, and innovation of Mercury’s world-renowned marine engines right here. Whether you’re a seasoned boater or a newcomer to the water, our expert team is dedicated to helping you find the perfect Mercury Outboard Engine to suit your needs.

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