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Small b2c merc 3l270inbnew Small b2c merc 3l270inbnew 01 Small b2c merc 3l270inbnew 02 Small b2c merc 3l270inbnew 03 Small b2c merc 3l270inbnew 04 Small b2c merc 3l270inbnew 05 Small b2c merc 3l270inbnew 06 Small b2c merc 3l270inbnew 07 Small b2c merc 3l270inbnew 08 Small x1 Small x2 Small x3 Small x4


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Powerful and Compact

Redefining the standard in a powerful, compact and easy-to-service package


  • Power mhp / kW 270
  • Maximum RPM (WOT) 4200
  • Engine type V-6
  • Displacement (L) 3.0
  • Air Handling Turbocharged and Aftercooled
  • Weight (engine only) 767 lbs / 348 kg 




Mercury Diesel’s 3.0L engine simplifies maintenance by locating service points at the front of the engine. The oil, coolant, fuse box, seawater strainer, drive lube (sterndrive only) and power steering fluid (sterndrive only) service points are located at the front of the engine next to Mercury’s color-coded maintenance schedule to provide easy-to-understand service guidelines and easy-to-reach access.






Redefining the Standard

The new Mercury Diesel 3.0L common-rail high-speed engine delivers exceptional performance and offers substantial improvements in acceleration and top speed – all made possible by a new water-cooled variable geometry turbocharger design (VGT). This matched system, plus a state-of-the-art engine control system, provides reduced time to plane and outstanding overall performance.





Reliability + Performance 

Enjoying your time on the water is more easily achieved with an engine that performs day in and day out. Mercury Diesel’s 3.0L engine is assembled in a state-of-the-art manufacturing facility that employs the latest in quality practices and control, ensuring ultimate confidence in reliability. Combine the reliability and performance of the Mercury Diesel 3.0L with Mercury’s proprietary SmartCraft system and a full suite of accessories that contribute to an unsurpassed boating experience.





Quiet Performer

The Mercury Diesel 3.0L delivers exhilarating performance while minimizing noise and vibration, while the air filter doubles as a silencer that removes the turbo whine historically associated with diesel engines. The motor mounts are designed to minimize vibration. Having a conversation while cruising has never been easier. 






Mercury diesels feature state-of-the-art anti-corrosion, including a thermostatically controlled closed water-cooled system. Water-cooled engine oil, gear oil and steering fluid decrease engine-room temperatures, extending engine life. The SeaCore® system is available for the ultimate in saltwater protection. 





Power mhp / kW


Bore and stroke

3.27 x 6.62" / 83 x 92 mm

Maximum RPM (WOT)


Engine type


Displacement (L)


Dry Weight (engine only)

348 Kg (767 lbs)

Dimensions (L x W x H)

36.6 x 33.5 x 30.0" / 931 x 851 x 784 mm

Peak Torque

594 Nm @ 2200 rpm

Air Handling

Turbocharged and Aftercooled

Fuel System

High pressure common rail


Counter clockwise facing flywheel

Compression Ratio


Fuel Pre-filtration requirement

Not required

Fuel lift pump

On engine

High pressure fuel pump

Bosch CP 4.2 w/ integrated gear lift pump

Valves per Cylinder



Oil jet cooled

Fuel injectors

Bosch CRS 2.20 (Solenoid)

Glow Plugs

Standard equipment with
Bosch glow plug control unit (GCU)

Air inlet (Starboard Rear)

Filtered and silenced


Honeywell VGT

Engine and turbocharger cooling

Closed cooled


Aftercooler, Engine Coolant,
Engine Oil, Power Steering / Gear Oil and Fuel
 - All are tube and shell

Seawater pump inlet size

38 mm (1.5 in)

Oil sump volume

8.5 L

Dipstick range

1.0 L

Oil maintenance interval

200 hours or annually

Coolant Volume

12 L

Flywheel size

290 mm (11.42 in) SAE 8

Electrical system

12 V, 110 A w/ conveniently located
 battery power and ground studs

MerCathode (Sterndrive only)

Engine mounted

Engine Stop

ECU Controlled

Engine Control Unit (ECU)

Bosch EDC17


Crank & cam position,
intake manifold pressure/temp,
compressor outlet temp,
exhaust gas temp, fuel temp,
 rail pressure, water in fuel (WIF),
oil pressure/temp,
coolant temp, seawater pressure/temp,
atmospheric pressure

Throttle and shift

Mercury DTS or Mechanical Cable

Helm and gauge compatibility

Mercury SmartCraft

Mercury Joystick Piloting

Compatible with Joystick Piloting
 for Sterndrives (Axius)

Inboard: ZF 63A

1.21, 1.56, 2.03, 2.52, 2.68

Inboard: ZF 63

1.25, 1.75, 2.78

Inboard: ZF 68IV

1.29, 1.56, 1.99

Inboard: ZF 45C



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