New Yanmar 6LF550 550HP Inboard Diesel Engine
The 6LF engine is a compact and powerful common rail diesel engine, perfect for planing and semi-planing vessels, both recreational and light duty commercial. Controlled by the YANMAR VC20 system, it expands YANMAR brand’s line with higher horsepower, providing the largest common rail, electronically managed marine diesel line-up in the industry.
The YANMAR 6LF meets EPA Tier 3 and EU RCD Stage 2 emissions regulations while also providing a wide range of fuel compatibility to meet requirements for various government service applications.
The 6LF has been customized with YANMAR’s proprietary fuel mapping and a larger mixing elbow for reliable and consistent output performance. It is custom engineered to offer direct connectivity to NMEA and J1939 CAN-bus networks. It comes available with a number of standard and optional features, including single- and 2-pole installation, various ZF gears, and custom secondary alternator options to meet nearly any complex application.
FEATURES
Suitable for large superyacht tenders, planing and semi-planing motoryachts up to 55ft, and light-duty commercial vessels
High power, low weight, and compact installation creating a high power density of 82 mhp/L for the 550 mhp model
Controlled by YANMAR VC20 Vessel Control System
Complements the largest common rail recreational and light duty commercial diesel engine line-up
Exceeds EPA Tier 3 and EU RCD Stage 2 emissions regulations
DETAILS
Available in 3 output models – 485, 530, 550 mhp
A proven solution for jet and shaft drives
Controlled electronically by YANMAR VC20 Vessel Control System, for 3 engines with up to 4 stations
Custom YANMAR fuel mapping and mixing elbow & bracket for reliable performance output
Custom YANMAR gear box configuration to reduce vibration and increase efficiency
Custom engine packaging for efficient installation
Certified for recreational and light duty commercial applications*
*Please note, the 6LF550 is not EPA Commercial certified.
Specifications
Rated Output
404 kW / 550 mhp
Rated Speed
3000 rpm
Displacement
6.728 L / 411 cu. in
No. of cylinders
6 cylinders
Cylinder Bore x Stroke
104 mm x 132 mm / 4.10 in x 5.20 in
Configuration
In-line, 4-stroke, vertical, water-cooled diesel engine Combustion system
Direct Injection, Bosch Common Rail System
Aspiration
Turbocharged & Intercooled
Alternator 12V – 90A, 24V – 70A
Dry weight without gear
780 kg / 1720 lbs
Dimensions
1519 mm x 893 mm x 881 mm
Controls
Electronic
Certifications
RCD 2 IMO Tier 2 EPA Tier 3 EMC
Standard Engine Package
Exhaust mixing elbow [high riser]
12V Electric system [single pole] / 24V Electric system [2-pole]
Flexible mounts
Alternator 12V – 90A / 24V – 70A
VC20 Vessel Control System
Electronic CAN-bus control head
Backup Panel
Lubrication oil evacuation pump [manual]
Optional Accessories
Secondary alternator 24V – 110A including smart regulator
Secondary alternator 12V – 125A or 24V – 65A [2-pole]
Second or third station
Front-PTO connection
Hot water connector
NMEA 2000 Engine monitoring system
JC20A Inboard Joystick
Extension harness [3m, 5m, 10m]
Man Over Board Switch
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