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YUCHAI YC6MK Series Marine Diesel Engine

    The YC6MK delivers reliable power for various vessel types and 150–250 kW marine gensets.

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    Universal Interchangeability YC6MK share identical mounting dimensions for flexible installation.
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    12,000+ Hour Overhaul Life Cold/hot impact test, high-temp & severe cold test, crankshaft fatigue test, max torque 2150 Nm.
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    50% Less Oil Consumption Proprietary piston ring seal & valve seal tech — well below domestic peer levels.
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    Optimized Fuel Economy Four-valve tech, centered injector, optimized injection pump — better than same-power domestic engines.
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    Smart Monitoring Ready Digital intelligent local panel and remote monitoring — safer cabin operation.
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    Quiet & Comfortable Integral gearbox, rear-positioned gear chamber, point-line gear meshing — lower noise than domestic peers.
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Product Description

The YC6MJ/YC6MK series marine diesel engine, developed by Yuchai, integrates advanced technologies from Germany, the USA, and Japan, tailored specifically for marine applications. These engines offer exceptional versatility, with interchangeable installation sizes between YC6MJ and YC6MK models, making them ideal for various vessel types and 150-250kW auxiliary generator sets. They undergo rigorous testing, including deep cold-hot impact, high humidity-cold, and crankshaft fatigue tests, ensuring reliability and durability with an overhaul period exceeding 12,000 hours. Optimized fuel injection pumps and four-valve technology enhance fuel efficiency, while proprietary sealing technologies reduce lubricating oil consumption by over 50% compared to domestic counterparts.

Technical Specifications

Item YC6MJ Series Marine
Diesel Engine		 YC6MK Series Marine
Diesel Engine
Model YC6MJ410L-C20 YC6MK350L-C20 YC6MK320C
Type Vertical,in-line,water-cooled,four-stroke
Number of cylinders-bore ×stroke(mm) 6-131×145 6-123×145
Displacement (L) 11.73 10.338
Compression ratio 16.8:1
Number of valves per cylinder 4
Induction system Turbocharged &intercooled
Rated power/speed (kW(Ps)/r/min) 300(410)/1800 257(350)/1800 235(320)/1800
Overload power/speed(kW(Ps)/r/min) 330(451)/1858 282(385)/1858 258(352)/1858
Min.specific fuel consumption of external characteristics(g/kW ·h) ≤205
Fywhee nousing SMechani#14
Cooling System(engine only) 18L 20.66L
Lube Oil System (refill) 32L 28L
ZC、CCS、EIAPP、China l
DiemensonificatexH)(mm) 1520×930×1200 1531×923×1201
Dry weight (kg) 1100 1200
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