YUCHAI YC6A Series Engine for Marine


  1. ω-type combustion chamber technology and low inertia mini aperture injector improve fuel efficiency.
  2. Yuchai sealing technology in piston ring and valve oil seal reduces the lube oil consumption.
  3. High fuel efficiency and low maintenance cost.
  4. Compact size facilitates installation, maintenance and repair.
  5. Operator and nature friendly with low noise, rapid start ability and low emissions
  6. Major overhaul period is more than 10000 hours.
  7. First choice for patrol boat and yacht as the rated speed could reach 2800rpm.



configurationVertical in-line, 6-cylinder, 4-stroke, direct injection, water-cooled
Bore × Stroke (mm)108 ×132
AspirationTurbocharged & inter-cooled
Displacement (L)7.25
Compression ration17 : 01
Rated power/Speed  (kW(hp)/r/min)YC6A280-C20YC6A260-C20YC6A250-C20YC6A220CYC6A195CYC6A190CYC6A170CYC6108ZLCB
Fuel consumption  g/(kW·h)≤198
Oil consumption  g/(kW·h)≤0.8
RotationCounterclockwise ( facing flywheel )
Starting methodElectric
Dry weight  (kg)780770
Engine dimension (L×W×H) (mm)1433 × 899 × 9761415 × 910 × 1075
CertificateZC, ZY, CCS, IMO

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