4045DFM70 Marine Propulsion Engine

4045DFM70 Marine Propulsion Engine


  • 4.5L PowerTech™
  • 60 kW (80 hp)
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Water-cooled exhaust manifold

  • Cooler and quieter environment for vessel and crew

Replaceable wet-type cylinder liners

  • Excellent heat dissipation
  • Hardened and precision machined for long life
  • Rebuild to original specifications

Internal balancers

  • Low noise and vibration for crew comfort

Corrosion resistant components

  • Provides engine protection from the effects of seawater

Either-side service

  • Oil fill and dipstick combinations
  • Remote oil filter for easier service access
  • Application and service flexibility to provide installation convenience plus fast and easy maintenance

Heat exchanger or keel-cooledheat exchanger or keel-cooled

  • High-capacity heat exchanger designed for reliable operation in adverse conditions
  • Integrated expansion tank, heat exchanger and exhaust manifold reduce chances of leaks
  • Keel-cooled options provide application flexibility

High torque and low rated RPM

  • Enables the engine to turn larger propellers at lower speed for best efficiency
  • Excellent vessel control and maneuvering
  • Lower rated rpm limits vibration and noise for better crew comfort

Fuel System

  • Proven and reliable Mechanical Governor



EPA Commercial Marine
IMO Exempt

General Data (based on standard option configuration)

Model 4045DFM70
Number of cylinders 4
Displacement-- L (cu in) 4.5 (275)
Bore and Stroke-- mm (in) 107 x 127 (4.21 x 5.00)
Engine Type In-line, 4- Cycle
Aspiration Naturally aspirated
Length - mm (in) 885 (34.8)
Width Maximum - mm (in) 713 (28.1)
Height-- mm (in) 912 (35.9)
Weight, dry - kg (lb) 437 (963)

Classification Societies


Engine Specifications

Performance Rating Power KW (bhp)
Rated Speed (rpm)
Rated fuel consumption L/hr(gal/hr)
M2 60 ( 82 )
17.5 ( 4.6 )

M rating

M2 - Typical annual usage (hr) 000-5
M2 - Typical full-power operation (hr) 16 of each 24 hr
M2 - Typical load factor <=65%