N Series

Cummins marine propulsion engine N series:

Premium performance
From a series that is service-proven through millions of hours of operation in some of the
world’s most demanding applications, the NT855 has been engineered to handle higher
injection pressures, with redesigned overhead arrangement, pistons, crankshaft and camshaft.
A gear train with high contact ratio spur gears also eliminates unwanted thrust loads and
reduces noise.
In line with the rest of the NT family, wide-ranging benefits including fuel efficiency, low oil
consumption, reliable long life, high power and durability.

Engine model NTA855-M450
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 336 kW/450HP @ 1800rpm
Compression Ratio 14.5:1

Engine model NTA855-M410
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 200 kW/270HP @ 1800rpm
Compression Ratio 14.5:1

Engine model NTA855-M400(2100rpm)
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 289 kW/400HP @ 2100rpm
Compression Ratio 14.5:1

Engine model NTA855-M400
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 289 kW/400HP @ 1800rpm
Compression Ratio 14.5:1

Engine model NTA855-M350
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 261 kW/350HP @ 1800rpm
Compression Ratio 14.5:1

Engine model NTA855-M320
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 239 kW/320HP @ 1500rpm
Compression Ratio 14.5:1

Engine model NT855-M300
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 224 kW/300HP @ 1800rpm
Compression Ratio 14.5:1

Engine model NT855-M270
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 201 kW/270HP @ 1800rpm
Compression Ratio 14.5:1

Engine model NT855-M250
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 187 kW/250HP @ 1800rpm
Compression Ratio 14.5:1

Engine model NT855-M240
Engine type 6 Cylinders in Line
Displacement 14 L
Rated Power (KW@RPM) 179 kW/240HP @ 1800rpm
Compression Ratio 14.5:1
Page 1 of 212