Description

Cummins 6BT5.9M 150Hp engine

Cummins 6BT5.9M 150Hp engine. The 6BT5.9M is a reliable, in-line 6-cylinder turbocharged diesel engine with a 5.9-liter displacement.

Drivetrain and electrical

Reliability: The 6BT engine is known for its robust and reliable design, particularly the earlier versions.
Marine-specific: The “M” in the model designation and the keel cooling system indicate these are specifically built for marine use.
Twin-engine setup: The “2x” means two engines, which is a common setup for redundancy and increased power in marine vessels.
Cummins 6BT5.9M is a robust, 5.9-liter, 6-cylinder marine diesel engine, often used for continuous duty operation, which pairs well with the heavy-duty Twin Disc MG5050marine gearbox. This engine and gearbox combination is known for its reliability in commercial marine environments.

The Cummins 6BT5.9M at the 150 HP rating is a turbocharged, in-line 6-cylinder engine with a mechanical fuel system.

Specification	Details
Power Output	150 HP (110 kW) @ 2200 RPM
Displacement	5.9 L (359 in³)
Configuration	In-line, 6-cylinder, 4-stroke diesel
Aspiration	Turbocharged
Cooling System	Designed for single loop keel cooling or heat exchanger systems
Voltage	24V electrical system, as specified in the product listing
Fuel System	In-line injection pump with a mechanical governor
Oil Capacity	13–15 US quarts (12.3–14.2 liters)
Weight (Dry)	Approximately 940 lbs (426 kg)

The Twin Disc MG5050 series is a standard marine transmission known for its heavy-duty construction and smooth shifting.

Specification	Details
Type	Vertical offset, cast iron housing
Control	Mechanical control valve
Ratios	Multiple reduction ratios are available; a common one for this engine pairing is 3:1
Cooling	Supports integrated oil cooling systems to prevent overheating
Weight	Approximately 91 kg (200 lbs) for the MG-5050SC model

What type of engine is the Cummins 6BT5.9M ?
It is a 5.9-liter, in-line 6-cylinder marine diesel engine, known for its robust design and suitability for continuous duty operation. The “BT” indicates it is a turbocharged version of the 6B model.
Is the 150 HP output efficient for a 5.9L engine?
Yes, this is a relatively low and conservative power rating for this engine block, which typically ranges from 150 to over 300 HP in various marine configurations. This lower output often translates to exceptional longevity and reliability as the engine .
What type of cooling system does it use?
This engine is configured for a keel cooling system, which uses the external hull of the boat to dissipate heat, simplifying the installation and eliminating the need for a traditional raw water intake and heat exchanger.
What type of transmission is the Twin Disc MG5050 ?
It is a heavy-duty, hydraulically operated marine transmission designed for smooth and reliable power transfer in demanding environments.