N3.21 SD
Ph: 02 9319 5222
21 hp
Specifications
Base: Kubota
Max power: 21 hp (15,4 kw)
RPM at max output: 3600 rpm
Displacement: 719 cc (43,88 ci)
Number of cylinders: 3 in line
Bore/stroke: 67 x 68 mm ( 2,64", 2,68")
Compression ratio: 23/1
Injection: Indirect injection (E-TVCS)
Aspiration: Atmospheric
Cooling: Heat exchanger
Alternator: 12 V 70 Amps
Inst. panel: A4
Gearbox: Technodrive SP60, 2.54R
Weight (incl. Gearbox): 144 kg
Diameters
Exhaust: 40 mm ( 3,15")
Fuel Pipe: 8 m, (0,31")
Seawater intake: 20mm
Installation angle: 15?
Standard Equipment
Panel A4
- Tachometer and hour meter
- Ignition start key
- Coolant temperature warning light
- Water in fuel filter warning light
- Engine oil pressure warning light
- Battery charge warning light
- Pre heat warning light
Heat exchanger
Fresh water pump
Thermostat
Sea water pump
Fresh water cooled exhaust manifold
Exhaust elbow with water injection
In line injection pump
Fuel feed pump
Fuel filter
Oil filter
Oil drain pump
Electric system 12 V.
Electric stop
Optional Equipment
Two-pole electric system
PTO pulley
Coupling
B3 panel
Exhaust system
Remote control
Sea water hoses
Fuel hoses
Sea water filter
Keel cooling
- Printable Brochure [download, 2444KB]
- Engine Installation Sheet [download, 291KB]
- Sail Drive Leg Technical & Installation Sheet [download, 1,142KB]
- Dimensional Drawings [download, 65KB]
- Technical data [download, 30KB]
Kubota Engine Base
The latest technologies employed by Kubota resulted in a robust design for the N3.21. The industrial engine base is proven in the most difficult conditions of usage.
Reliability and Comfort
This engine has a proven reliability record and the new marinization has even added to its quality level. The latest generation heat exchanger improves the temperature regulation, which quality can particularly be appreciated when a boiler is installed. This system further increases the reliability and longevity of the N3.21. A special coating of the pistons with molybdenum lowers friction and reduces engine vibrations resulting in supplementary comfort concerning the sound levels.
Ease of Installation
The N3.21 offers several onboard installation options making it suitable for a vast variety of boats. Repowering your boat is a breeze with our installation kits which are specifically designed to eliminate the need to modify the frame of your existing engine compartment.
Clean Power Supply
The N3.21 does not need electronic equipment to comply with the latest environmental requirements on raw materials. The emission regulations EU-RCD, US-EPA and BSO are easily complied with as the result of the improved combustion and injection system E-TVCS (Environmental-Tri Vortex Combustion System). The particulate emission and smoke have been significantly reduced and the fuel consumption has been dramatically improved.