Mercury Diesel Inline 4.2 - Mercury Diesel Inline common rail or electronic injection fuel systems provide increased power-to-weight ratios, cleaner starts and less noise for a superior boating experience. The Inline range of engines are built lightweight, compact and provide increased power for impressive acceleration, throttle response and quicker planing times. Inline engines are compatible with SmartCraft electronics, SeaCore corrosion protection, Axius joystick control systems and Mercury's effortless Digital Throttle & Shift systems.

Engine Overview

• Expect superior performance and quick response from this compact, robust design
• Enhanced fuel economy delivered by the full-authority electronic engine control
• Quiet, smooth performance and enhanced sociability produced from the proven High-Pressure Common-Rail fuel system
• Maximise vessel performance and access comprehensive vessel diagnostic information via SmartCraft® electronics


Fuel System: Bosch Common-Rail (CRS 2.0); Integrated WIF sensor in secondary fuel filter
Lubrication System: Cast aluminium oil pan
Electrical System: 12 Volt system
Coolant System: Sea Water Aftercooled; Heat Exchanger only
Emissions: EPA Tier 2, IMO, RCD certified, BSO/SAV (select ratings)

Power HP/KW 350 / 257
Full Throttle Range 3800-3800
Displacement 4.2L
Engine Type In-line 6-cylinder, 4-stroke diesel
Bore & Stroke 94 x 100mm (3.7 x 3.9in)
Fuel Requirement Diesel
Aspiration Turbocharged / Seawater Aftercooled
Fuel Injection System Bosch Common-Rail (CRS 2.0)
Cooling System Seawater Aftercooled; Heat Exchanger
Dimensions (LxWxH) in 42.4 x 30.4 x 31.1
Dimensions (LxWxH) mm 1077 x 772 x 790
Weight (Dry) (lbs./kg) 1014 / 460
Weight w/Bravo 3 Drive  (lbs./kg) 1244 / 564



Horse Power (hp)
  • 350
Horse Power (hp)
  • 350

Engine 1

Engine Make Mercury
Horse Power 350