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YUCHAI YC6B Series Marine Diesel Engines

    6-cylinder turbocharged intercooled engine, co-developed with German & Japanese marine technology — built for small vessels and 50–100 kW marine gensets.

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    German & Japanese Technology Co-developed with leading marine engine expertise from Germany and Japan.
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    10,000+ Hour Overhaul Life Alloy iron block & head, integral crankshaft, sliding bearings.
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    Superior Fuel Efficiency ≤198 g/kW·h — necking combustion & AD high-pressure pump for complete burn.
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    50% Less Oil Consumption Proprietary piston ring seal & valve seal tech.
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    Compact & Lightweight Ideal for fishing vessels and 50–100 kW marine gensets.
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    ZC & CCS Certified Meets international classification standards with HCQ138 gearbox compatibility.
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Product Description

The YUCHAI YC6B series marine diesel engines, developed with cutting-edge German and Japanese marine technology, offer exceptional performance for small ships and fishing vessels, as well as 50-100kW marine generator sets. These engines feature high-strength alloy castings for the cylinder block and head, ensuring superior rigidity and reliability. With turbocharged and inter-cooled intake, necking combustion technology, and AD-type high-pressure fuel pumps, they deliver efficient combustion and significantly lower fuel consumption compared to domestic alternatives. The YUCHAI proprietary piston ring and valve seal technologies further reduce lubricating oil consumption by over 50%.

YC6B Technical Data

Model YC6B165C YC6B165L-C20 YC6B150C YC6108ZLCA
Type Vertical, In-line, Water-cooled, 4-Stroke
Intake way Turbocharged & Inter-cooled
No. of cylinders-Bore × Stroke (mm) 6-108 × 125
Displacement (L) 6.871
Compression ratio 17.5:1
Continuous power/speed (kW(Ps)/r/min) 120 (165) /2300 120 (165) /1800 110 (150) /1800 90 (123) /1500
One-hour power/speed (kW(Ps)/r/min) 132 (180) /2374 132 (180) /1858 121 (165) /1858 99 (135) /1548
Min. specific fuel consumption (g/kW·h) ≤198
Specific oil consumption (g/kW·h) ≤0.5
Engine oil capacity (L) 15-17
The Min. steady operation speed (r/min) ≤1035 ≤810 ≤675
Crankshaft rotation direction (see from power output end) Anticlockwise
Starting way Electrical
Net weight (kg) 750
Overall dimensions (L×W×H) (mm) 1414 × 857 × 1055
Matched reduction gearbox HCQ138, HC65, 120C etc.
Certificate ZC, CCS

YC6B Technical Data

Model YC6108ZCA YC6108ZC
Type Vertical, In-line, Water-cooled, 4-Stroke
Intake way Turbocharged
No. of cylinders-Bore × Stroke (mm) 6-108 × 125
Displacement (L) 6.871
Compression ratio 17.5:1
Continuous power/speed (kW(Ps)/r/min) 103 (140) /2300 80 (109) /1500
One-hour power/speed (kW(Ps)/r/min) 113.3 (155) /2374 88 (120) /1548
Min. specific fuel consumption (g/kW·h) ≤198
Specific oil consumption (g/kW·h) ≤0.5
Engine oil capacity (L) 15-17
The Min. steady operation speed (r/min) ≤1035 ≤675
Crankshaft rotation direction (see from power output end) Anticlockwise
Starting way Electrical
Net weight (kg) 720
Overall dimensions (L×W×H) (mm) 1239 × 820 × 1198
Matched reduction gearbox HC65, 120C etc.
Certificate ZC, CCS

YC6B Installation Drawing

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