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Weichai 6M33 Series Marine Diesel Engine

    Weichai 6M33C series — 19.6L inline 6-cylinder delivering 500–750 HP at 1500–1800 rpm for P1 continuous duty marine operations.

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    500–750 HP Power Range 9 models across 1500–1800 rpm, P1 unrestricted continuous duty for heavy commercial vessels.
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    19.6L Heavy Displacement 150×185 mm bore/stroke, cast iron gantry block, one-piece casting crankshaft, wet liners.
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    IMO Tier II Certified T/TA aspiration meets international marine emission standards for commercial operations.
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    Marine-Optimized Turbo Marine-specific turbocharger, water jacket exhaust manifold, washable air filter for extended service life.
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    Safe & Clean Fuel System P-type in-line pump, dual-skinned pipes with alarm, duplex filters replaceable while running.
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    CCS & EIAPP Approved 1916×1252×1383 mm, 2390 kg dry weight. Optional air starter, remote harness & classification trial.
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Product Description

The Weichai 6M33 Series marine diesel engine features a 150x185mm bore and 19.6L inline 6-cylinder design, delivering 500-750HP (368-551kW) across 1500-1800RPM for P1 (unrestricted continuous) to P4 (high-performance intermittent) duties. Key components include a one-piece casting crankshaft, wet liners, oil-cooled aluminum pistons, and a metal-element lubrication system, paired with a mechanical fuel pump and marine-optimized turbocharging for efficient combustion and low emissions. With 24V electric starting, intelligent voyage monitoring, and CCS/EIAPP certification, it supports optional air starting, remote monitoring, and PTO, ideal for ocean-going cargo ships, workboats, and high-performance fishing vessels. Dimensions: 1916x1252x1383mm, dry weight 2390kg.

P1 Duty P2 Duty P3 Duty P4 Duty
Application Unrestricted continuous continuous intermittent high performance
Engine load variations Very little or none continuous important very important
Mean engine load factor 80 to 100% 30 to 80% 50% 30%
Annual working time More than 5000 h 3000 to 5000 h 1000 to 3000h less than 1000 h
Time at full load unlimited 8 h each 12 h 2 h each 12 h 1 h each 12 h
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