Inboard engine QSK50

inboard engine
inboard engine
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inboard, propulsion, auxiliary
Power source
boating, professional vessel
turbocharged, common-rail
Other characteristics
Pollution control standard
Tier 3, Tier 2

Max.: 2,200 ch (2,200 hp)

Min.: 1,700 ch (1,700 hp)

Number of cylinders

16 unit

Engine speed

1,600 rpm, 1,800 rpm, 1,900 rpm (10,053 rad.min-1)


159 mm (6.3 in)


159 mm (6.3 in)


2,780 mm (109 in)


1,573 mm (62 in)


2,232 mm (88 in)


Overview: 1268-16414 kW | 1700-2200 hp Designed to withstand the challenging conditions commercial marine operators often face; this same reliable, durable power is now available for recreational boating applications, including super yachts and yacht support vessels Improved idle stability and reduced noise and vibration are a direct result of the Cummins Modular Common Rail fuel system In-cylinder technology to meet IMO Tier 2/3, EPA Tier 3 and EU Stg. 3a; platform for future emissions in the U.S. and globally Covered by a comprehensive one year warranty and backed by Cummins global service network Engine Design – Reliable base engine uses common components from the proven K19, K38 and K50 engines. A new cast-iron, ductile single-piece piston with nitride-coated rings and hardened cylinder liner provides excellent durability and long life Fuel System – Modular Common Rail Fuel System features a simplified design which provides constant high injection pressure regardless of engine speed or load condition. Benefits include low noise and vibration for quiet operation, idle stability and low-end torque Cooling System – Two-pump, two-loop, low temperature aftercooling maximizes efficiency and improves performance. Engine-mounted titanium plate heat exchanger provides superior durability with minimal maintenance requirements Exhaust System – Dry-shielded exhaust manifold and turbocharger. Vertical or horizontal exhaust connections available for installation flexibility Air System – Turbocharger optimized for vessel operating conditions and safety. Mounted or remote marine grade air cleaner with replaceable canister reduces maintenance cost
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.