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YUCHAI YC6A Series Marine Diesel Engine

    Engineered with German & Japanese marine technology, the YC6A delivers 150–220 PS for small vessels and marine generator sets.

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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 — built to last.
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    Superior Fuel Efficiency ≤198 g/kW·h — far outperforms domestic equivalents with necking combustion & AD high-pressure pump.
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    50% Less Oil Consumption Proprietary piston ring seal & valve seal tech cuts lube oil use by over 50% vs. domestic peers.
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    Compact & Lightweight Small volume, light weight — ideal for small vessels and 90–120 kW marine gensets.
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    ZC, CCS & IMO Certified Meets international classification standards for commercial and fishing vessel applications.
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Product Description

The YUCHAI YC6A series marine diesel engine, developed with advanced German and Japanese marine technology, represents a new generation of marine power solutions. Featuring high-strength alloy castings for the cylinder block and head, it ensures superior rigidity and reliability. With turbocharged and inter-cooled intake, necking combustion technology, and AD-type high-pressure fuel pumps, it offers efficient combustion and significantly lower fuel consumption compared to domestic products. Ideal for small ships, fishing vessels, and 90-120kW marine generator sets, the YC6A series delivers exceptional performance and durability.

YC6A Technical Data

Model YC6A200L-C20 YC6108ZLCB YC6A170C
Type Vertical, In-line, Water-cooled, 4-Stroke
Intake way Turbocharged & Inter-cooled
No. of cylinders-Bore × Stroke (mm) 6-108 × 132
Displacement (L) 7.255
Compression ratio 17.5:1
Continuous power/speed (kW(Ps)/r/min) 145 (200) /1500 112 (152) /1500 125 (170) /1500
One-hour power/speed (kW(Ps)/r/min) 159.5 (220) /1500 123.2 (170) /1548 137.5 (185) /1548
Min. specific fuel consumption (g/kW·h) ≤198
Specific oil consumption (g/kW·h) ≤0.5
Engine oil capacity (L) 22
The Min. steady operation speed (r/min) / ≤675
Crankshaft rotation direction (see from power output end) Anticlockwise
Starting way Electrical
Net weight (kg) 750 770
Overall dimensions (L×W×H) (mm) 1340 × 870 × 1100 1416 × 921 × 1092
Matched reduction gearbox or marine gen-set 120kW 120C, 135, MB242 etc.
Certificate ZC, CCS, IMO ZC, CCS

YC6A Technical Data

Model YC6A190C YC6A195C YC6A220C
Type Vertical, In-line, Water-cooled, 4-Stroke
Intake way Turbocharged & Inter-cooled
No. of cylinders-Bore × Stroke (mm) 6-108 × 132
Displacement (L) 7.255
Compression ratio 17.5:1
Continuous power/speed (kW(Ps)/r/min) 140 (190) /1800 145 (197) /2300 162 (220) /2300
One-hour power/speed (kW(Ps)/r/min) 154 (210) /1858 159.5 (220) /2374 178.2 (240) /2374
Min. specific fuel consumption (g/kW·h) ≤198
Specific oil consumption (g/kW·h) ≤0.5
Engine oil capacity (L) 28
The Min. steady operation speed (r/min) ≤810 ≤1035
Crankshaft rotation direction (see from power output end) Anticlockwise
Starting way Electrical
Net weight (kg) 770
Overall dimensions (L×W×H) (mm) 1416 × 921 × 1092
Matched reduction gearbox HCQ138, 120C, 135, MB242 etc.
Certificate ZC, CCS, IMO

YC6A Installation Drawing

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