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Weichai WP10C395-22 Marine Propulsion Engine: The 395HP Workhorse for Commercial Fleets
The Weichai WP10C395-22 Marine Engine is a high-performance marine propulsion diesel engine designed for commercial marine applications that demand dependable power, fuel efficiency, and long operating life. Delivering 395HP (291kW) at rated speed, this engine is part of the proven Weichai WP10 series propulsion engine family, which has been widely adopted by vessel operators around the world.
As a professional marine engine supplier, HekoPower provides genuine Weichai marine engines, technical support, spare parts supply, and export services for shipyards, fleet operators, fishing companies, and marine equipment distributors. The WP10C395-22 marine diesel engine combines mature engineering with low operating costs, making it an excellent choice for new vessel construction and marine repower projects.
Tech Specs of Weichai WP10C395-22
General Engine Data
Engine Model: Weichai WP10C395-22
Cylinder Count: 6 Cylinders in Line
Engine Type: 4-stroke, water cooled, in-line, turbocharged and aftercooled
Total Engine Displacement: 9.726 L
Bore * Stroke: 126×130 (mm)
Net weight: 1070 kg
Overall Dimension: 1482×981×1016 (mm)
Key Performance Data
Rated Power: 290 kW / 395 HP
Rated Speed: 2200 RPM
Idle Speed: 600±50 RPM
Minimum fuel consumption rate: 191 g/kW.h
Oil consumption rate: ≤0.5 g/kW.h
More Technical Data
Certification: IMO Tier II
Aspiration: turbocharged and aftercooled
Starting system: Electrical
Rotation(facing the flywheel) : Counter-clockwise
Fuel system: HPCR
Power rating: P3
Noise: ≤97 dB(A)
Understanding the Engineering Excellence of the WP10C395-22
The WP10C395-22 marine diesel engine belongs to the iconic Weichai WP10 series propulsion engine family, which is widely recognized across global shipping lanes. This specific model utilizes a displacement of 9.72 liters through an in-line six-cylinder configuration. The engine is a four-stroke, water-cooled unit utilizing advanced turbocharging and intercooling technologies.
Power Profile and Power Density
Developing 395 horsepower (alternatively rated as a Weichai 290kW marine engine or precisely a Weichai 291kW marine engine) at a rated speed of 2200 RPM, this engine handles sudden load variations with ease. The high torque reserve, typically ranging between 20% and 35%, means the engine does not bog down when a commercial vessel faces heavy head seas or when a fishing boat handles loaded nets. This rapid throttle response is a direct result of the pulse turbocharger design matching perfectly with the cylinder volumetric efficiency.
Mechanical Integrity and Block Architecture
The physical frame of this Weichai boat engine relies on a one-piece gantry cylinder block. This heavy-duty structural choice reduces internal stress concentration under high combustion pressures. The frame design minimizes operational noise while improving overall stiffness, preventing structural distortion over thousands of operating hours.
In-Depth Technical Comparisons: WP10C395-22 vs. Alternative Marine Powerplants
Selecting a marine propulsion diesel engine requires a clear understanding of how different options compare in real-world metrics. When evaluating the WP10C395-22 against mechanical-injection legacy engines or bulkier units from other displacement brackets, several clear advantages emerge.
High-Pressure Common Rail vs. Mechanical Inline Pumps
Older marine motors often rely on traditional mechanical inline injection pumps. While simple, they lack the ability to adjust injection timing based on real-time operational loads. The Weichai 395HP marine engine utilizes an electronically controlled high-pressure common rail system.
This configuration allows multiple injections within a single combustion cycle. The resulting fine fuel atomization lowers the standard Weichai 395HP marine engine fuel consumption down to an efficient 191 g/kW·h at optimal cruising loads. Mechanical alternatives struggle to drop below 205 g/kW·h, leading to a noticeable increase in your fleet’s annual fuel expenses.
Thermal Efficiency and Heat Dissipation Profiles
Many alternative engines in the 400HP range use raw-water direct cooling circuits that risk internal salt scaling and localized hotspots. The Weichai WP10 marine engine technical data highlights a closed-loop dual-cooling system. Freshwater circulates through the internal engine block passages, while an integrated cupronickel heat exchanger transfers that thermal load to the passing seawater. This architecture keeps internal operating temperatures uniform, protecting individual cylinder liners from premature thermal distortion.
Real Application Scenarios Across Commercial Vessels
A marine motor is only as good as its performance on open water. The versatile power delivery of the Weichai WP10C395-22 makes it a preferred choice across several distinct commercial vessel sectors.
Hard-Working Fishing Boat Diesel Engine Configurations
For a 395hp commercial fishing boat engine, Weichai designs this unit to survive variable operating cycles. Trawlers require low-speed, high-torque capabilities when dragging heavy nets, followed by a fast sprint back to port once the hold is full. The WP10C395-22 handles these shifts effortlessly, offering reliable power for coastal fishermen who need an enduring fishing boat diesel engine that will not fail during critical catches.
High-Speed Patrol Vessels and Passenger Ferries
When deployed as a marine engine for passenger ferry or patrol vessel installations, consistent speed and low vibration take priority. The balanced six-cylinder layout of this Weichai marine motor prevents annoying harmonic vibrations from transferring through the hull. This creates a quieter experience for passengers and reduces structural stress on aluminum or composite hulls traveling at sustained high RPMs.
Workboats and Coastal Cargo Vessels
For heavy displacement hulls like a marine engine for workboat or coastal cargo vessel duty, the key requirement is reliable continuous operation. The WP10C395-22 functions beautifully as a continuous duty unit, moving loaded barges and regional cargo carriers up and down rivers and coastal lanes without overheating or dropping oil pressure.
Long-Term Maintenance, Overhaul, and Parts Replacement Tips
Maximizing the operational lifespan of your engine requires adherence to structured maintenance protocols. As an experienced Weichai marine engine distributor, HekoPower stresses that preventative care directly prevents expensive emergency dockage.
Managing the Fuel System Integrity
Because the high-pressure common rail system operates under extreme pressures, fuel cleanliness is critical. Microscopic water droplets or fine sediment can damage injector nozzles. Operators must inspect the primary fuel-water separators every 50 operating hours and replace the secondary fuel filters every 250 hours. Always ensure your team uses genuine Weichai marine engine spare parts to maintain correct filtration micron ratings.
Monitoring Turbocharger and Intercooler Conditions
The turbocharger relies on clean engine oil for both lubrication and cooling. Ensure the engine idles for three to five minutes before shutdown to allow the turbocharger turbine to cool down gradually, preventing oil coking within the bearing housing. Clean the air filter element regularly and inspect the zinc anodes inside the intercooler every month to prevent galvanic corrosion from seawater.
Tracking Major Overhaul Milestones
According to verified Weichai WP10 marine engine technical data, the target operational life before a major overhaul exceeds 20,000 hours, provided routine maintenance is sustained. When reaching this milestone, fleet mechanics should focus on replacing cylinder liners, piston rings, main bearings, and re-calibrating the electronic injectors to restore original combustion efficiency.
Navigating Price, Availability, and Global Supply Chains
When planning a vessel build or a repower, lead times and supply reliability matter just as much as technical features. Finding a trusted China marine diesel engine supplier makes a massive difference in project timelines.
Sourcing from an Authorized Exporter
Working with an established Weichai marine engine exporter like HekoPower guarantees you receive a genuine Weichai WP10C395-22 engine, complete with factory certifications and matching shipping documentation. Avoid unverified trading companies that often offer modified truck engines painted blue instead of authentic marine propulsion configurations.
Logistics, Lead Times, and Packaging
The physical WP10C395-22 engine dimensions and weight (measuring roughly 1482mm in length and weighing over 1000kg dry) require specialized export packaging. Wholesale Weichai marine engine shipments from HekoPower are secured in heavy-duty, moisture-sealed wooden crates designed for international sea freight. We actively coordinate with global shipping lines to optimize delivery times and minimize port delays.
Secure Your Wholesale Weichai Marine Engine Quote
HekoPower simplifies the global procurement of commercial marine propulsion systems. If you need a comprehensive quote covering Weichai WP10C395-22 price and availability, our engineering team is ready to assist. We provide clear technical breakdowns, optional equipment configurations, and transparent logistics planning to keep your vessel project moving forward on time and on budget. Connect with our sales department today to secure an authentic, high-performance marine power system built for long-term operational success.
Weichai WP10 series marine diesel engine, original products from Weichai. This series mainly includes WP10C313-21, WP10C350-18, WP10C375-21, WP10C395-22.
Frequently Asked Questions Regarding the Weichai WP10C395-22
What are the exact dimensions and weight of the WP10C395-22?
The standard engine footprint is 1482 mm in length, 981 mm in width, and 1016 mm in height. The net dry weight is approximately 1070 kg. These dimensions make it a highly adaptable option for mid-sized engine rooms looking for a clean repower solution.
Does this engine meet international marine emission standards?
Yes, this Weichai WP10C395-22 marine diesel engine is fully certified as an IMO Tier II compliant 290kw marine engine. It meets the international nitrogen oxide emission limits specified in the MARPOL convention, making it fully legal for operation across most international waterways.
How can I confirm the authenticity of my Weichai marine engine?
Every genuine Weichai marine engine comes with a distinct factory data plate containing a unique serial number. You can verify this number directly through an authorized Weichai marine engine supplier like HekoPower to check the manufacturing history and production status.
What type of marine gearbox matches well with this engine?
The WP10C395-22 features a standard SAE 1 flywheel housing configuration with an SAE 14 flywheel. This allows it to couple easily with major marine gearboxes, such as the Advance HC138 or ZF series, depending on your hull's required reduction ratio.
What is the typical Weichai marine engine lead time?
Lead times vary depending on factory production schedules and customization options, such as specific instrument clusters or dual-circuit cooling adjustments. Generally, standard configurations ship within three to five weeks from our facility.
