Yanmar 6LY440 Marine Diesel Engine, 440 HP

The Yanmar 6LY440 is an in-line six-cylinder, vertical, water-cooled marine diesel rated 324 kW (440 mhp) at 3300 RPM from 5.813 L. The description pairs it with Yanmar's VC10 control system, which keeps engine control and monitoring on two separate CAN-bus networks.

Engine data is shown on 3.5-inch display screens rated IP66 waterproof, with full diagnostics, UV protection, an anti-dazzle coating and anti-fog ventilation. The J1939 bus is reserved for engine and drive control, while GPS, chart plotter and monitoring displays run on NMEA2000; if the J1939 bus fails, the system switches automatically to a pull-out backup panel.

VC10 offers operating modes for single and twin inboard or sterndrive installations, is laid out for easy servicing and can be expanded later to add monitoring. The engine itself keeps the compact in-line six-cylinder block that has anchored the 6LY series for three decades.

Highlights

• 324 kW / 440 mhp at 3300 RPM

• 5.813 L (354 cu in) in-line six-cylinder diesel

• 3.5-inch IP66 displays with full diagnostics

• Separate J1939 and NMEA2000 CAN-bus networks

• Automatic switch to pull-out backup panel

• VC10 modes for single or twin inboard/sterndrive

Specifications

Good to know

• Installation, rigging and commissioning by a qualified marine technician are recommended; follow the manufacturer's pre-delivery and break-in procedures.