Details
Weichai X6170ZC408-1 Marine Engine
The Weichai X6170ZC408-1 Marine Engine is a proven medium-speed marine propulsion engine developed for commercial vessels requiring dependable power, economical operation, and long-term durability. Rated at 408HP (300kW) at 1000RPM, this engine belongs to the renowned Weichai X6170ZC series marine engine platform, which has been widely used in fishing vessels, inland cargo ships, river transport boats, coastal vessels, and engineering workboats.
As a professional marine engine supplier, HekoPower provides genuine Weichai X6170ZC408-1 marine engines, spare parts support, technical consultation, and worldwide delivery services. The engine combines a robust mechanical injection fuel system with a mature six-cylinder design, making it particularly attractive to vessel owners operating in regions where maintenance simplicity and reliability are priorities.
Tech Specs of Weichai X6170ZC408-1
General Engine Data
Engine Model: Weichai X6170ZC408-1
Cylinder Count: 6 / 8 Cylinders in Line
Engine Type: 4-stroke, water cooled, in-line, turbocharged and aftercooled
Total Engine Displacement: 27.24 L / 36.32 L
Bore * Stroke: 170×200 (mm)
Dimensions L×W×H) / net weight: L6 2463×1200×1650 (mm) / 3100kg; L8 2650×1040×1818 (mm) / 3800kg
Key Performance Data
Rated Power: 300 kW / 408 HP
Rated Speed: 1000 RPM
Idle Speed: 450-650 RPM
Minimum fuel consumption rate: 197 g/kW.h
Oil consumption rate: ≤0.5 g/kW.h
Torque reserve: 20-34%
More Technical Data
Certification: IMO Tier II
Aspiration: turbocharged and aftercooled
Starting system: Gas/Electrical
Rotation(facing the flywheel) : Counter-clockwise
Fuel system: Mechanical pump
Power rating: P1
Noise: ≤105 dB(A)
Technical Architecture and Core Engineering
Understanding the distinction within the Weichai X170 marine diesel engine architecture requires looking past basic power output numbers. The X6170ZC408-1 engine dimensions measure 2463mm in length, 1200mm in width, and 1650mm in height, resulting in a robust dry net weight of 3100kg. This physical footprint highlights its heavy-duty casting compared to lighter, high-RPM automotive derivatives.
Deep Dive into the 1000 RPM Mechanical Blueprint
A key engineering feature of the X6170ZC408-1 propulsion engine is its specific rated speed. While newer variations in the 6170 series are tuned to run at 1200 RPM or 1500 RPM to capture higher peak horsepower from the same block, this 408HP variant maintains a 1000 RPM profile.
Lower operational speed directly impacts mechanical longevity. By limiting the piston travel velocity over the 200mm stroke within the 170mm bore cylinders, internal friction and thermal loading on the rod bearings are structurally minimized.
The combustion layout relies entirely on a rugged X6170ZC408-1 mechanical pump fuel system. Instead of common-rail electronic injectors that require clean fuel, software calibration, and complex wiring harnesses, this mechanical injection engine utilizes a direct inline plunger pump. It handles variable fuel qualities with higher tolerance and allows mechanical technicians to service the injection system using traditional tools.
Continuous Duty P1 Rating vs Heavy Duty P2 Models
The Weichai X6170ZC408-1 specifications classify this machine strictly under the P1 Continuous Duty rating. This classification defines its operational profile: unprescribed, continuous operation at full load for unlimited annual working hours, typical of ocean-going or heavy-displacement hulls.
When analyzing the Weichai X6170ZC408-1 technical data against faster P2 heavy-duty variants like the 450HP or 480HP versions, the trade-off becomes clear. The higher-rated models achieve their power increases by stepping up engine speeds to 1200 RPM and modifying fuel delivery timing.
For applications that demand uninterrupted duty factors between 80% and 100%, choosing the 300kW marine engine variant running at 1000 RPM reduces cyclical fatigue. The lower power density ensures the cast-iron gantry-type block operates well within its mechanical safety margins.
Operational Fuel Profile and Cost Optimization
Fuel expenditures make up the vast majority of ongoing commercial vessel operational costs. The mechanical integration of a pulse-conversion turbocharger paired with an independent four-valve per cylinder configuration enables highly efficient fuel consumption across a broad working window.
Fuel Consumption Analysis across the Power Curve
The minimum recorded Weichai X6170ZC408-1 fuel consumption rate reaches 197g/kW·h under optimal conditions. This high thermal efficiency stems from the direct injection bowl design inside the aluminum alloy pistons, which feature dedicated internal gallery oil cooling channels.
At a steady 1000 RPM cruising speed under continuous P1 loading, the engine maintains an flat fuel curve. This efficiency prevents excessive unburnt carbon buildup during extended low-load or idling conditions, a common issue for larger medium-speed engines when operating in river locks or crowded harbors.
Emission Conformity and Environmental Engineering
The product satisfies all international maritime criteria under the Weichai IMO Tier II marine engine standards. Achieving Tier II compliance via purely mechanical fuel management requires precise optimization of the intake volume and spray atomization patterns.
The pulse-conversion turbocharger leverages exhaust gas kinetic energy to maximize fresh air density within the cylinders. This ensures complete combustion, keeping smoke intensity exceptionally low while reducing overall thermal stress on the cylinder heads.
Real-World Maritime Application Scenarios
The unique mechanical properties of this 6-cylinder Weichai marine engine make it a preferred choice for heavy-duty commercial hulls working under difficult, unpredictable conditions.
Commercial Fishing and Coastal Trawling
For operators of commercial fishing vessels, sudden downtime during a peak seasonal run can severely impact profitability. The Weichai X6170ZC408-1 price for fishing boats represents a balanced capital investment that offers long-term reliability.
When pulling deep-sea trawl nets, the hull requires maximum low-end torque rather than high peak speeds. The 300kW continuous duty marine engine provides steady bollard pull without overloading internal components, ensuring deep-sea trawlers can safely manage heavy net loads even in adverse weather.
Inland Waterway Cargo and Transport Ships
Inland river transportation demands continuous engine operation for days at a time. The marine propulsion engine for transport ships must overcome strong river currents while carrying heavy bulk cargo.
Installed inside an inland cargo vessel or a river transport boat, the 1000 RPM configuration allows for large-diameter, high-pitch propeller matching via standard marine reduction gearboxes. This layout translates engine power into forward thrust with minimal slip, delivering excellent fuel economy along long-distance river routes.
Heavy Engineering and Harbor Workboats
Whether configured for an engineering vessel handling marine dredging or a dedicated workboat pushing barges, the high rigidity of the gantry cylinder block absorbs high structural loads.
HekoPower frequently sources this engine model for operators who require a reliable main power plant that can interface with auxiliary hydraulic take-offs (PTOs) without causing crankshaft alignment issues.
Lifecycle Maintenance and Component Replacement
Protecting your marine investment requires sticking to a disciplined maintenance schedule using genuine components. As a global Weichai marine engine distributor, HekoPower provides direct access to the required replacement parts for Weichai X6170ZC engines to prevent extended port delays.
Achieving the 20,000-Hour Overhaul Benchmark
The advertised 20,000-hour overhaul marine engine Weichai standard is an achievable baseline, provided filtration systems are properly maintained. Because this variant operates at a conservative 1000 RPM, component degradation is naturally slow.
Reaching this operational milestone requires systematic oil sampling, timely cleaning of the fresh and raw water heat exchangers, and keeping fuel delivery pressures well within factory limits.
Component Sourcing Strategy for Fleet Operators
Using low-quality aftermarket parts in a high-pressure maritime environment can lead to premature engine failure. Fleet owners should source components exclusively through a certified, genuine Weichai marine engine exporter to ensure parts meet original material specifications.
Key maintenance items that require attention over the lifecycle include:
- Centrifugal raw water pump impellers and sacrificial zinc anodes.
- Plunger assemblies and matching injector nozzle tips for the mechanical injection pump.
- High-flow lubrication system filter elements and specialized cylinder head gaskets.
Sourcing and Procurement Insights from HekoPower
Navigating global supply chains for industrial marine machinery requires clear communication regarding lead times, logistics, and technical certification.
Factory Logistics and Lead-Time Management
When you buy a Weichai X6170ZC408-1 marine engine from an authorized supplier like HekoPower, shipping timelines are managed systematically. The standard Weichai X6170ZC408-1 lead time varies based on required classification modifications and specific gearbox adaptations.
We maintain a streamlined supply process directly from the China Weichai marine engine manufacturer base, ensuring that all production verification, dyno testing, and sea-trial preparation phases are completed efficiently prior to port delivery.
Comprehensive Wholesale and Quotation Processing
Whether you require an individual main engine replacement or a complete package for a multi-vessel construction project, our team can provide a detailed Weichai marine engine quotation tailored to your parameters.
Our wholesale distribution network ensures transparent pricing structures, comprehensive logistics coordination, and full technical documentation to simplify international customs clearance and port entry.
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
What classifications cover the Weichai X6170ZC408-1 engine?
Every unit delivered can be supplied as a CCS certified Weichai 300kW propulsion engine. Depending on your operational region and vessel requirements, HekoPower can coordinate inspection and certification through other international societies, including BV, ABS, and GL, confirming full compliance with global safety standards.
How does the cooling system operate under heavy loads?
The engine uses a reliable double-circulation water cooling system. A cast-iron centrifugal fresh water pump handles internal engine block cooling, while a self-priming raw water pump draws in seawater to cool the internal fresh-water loop via a modular heat exchanger. This design prevents salt encrustation inside the main engine block.
Can this mechanical engine run on variable fuel qualities?
Yes, the inline mechanical injection system is specifically engineered to handle varying qualities of commercial marine diesel fuel. Unlike electronic common-rail engines that can shut down due to minor fuel contamination, this mechanical system offers high operational tolerance, making it ideal for remote coastal and inland river operations.
What is the standard starting method for this model?
The base configuration features a high-power 24V double-wire electrical starter motor. For specific vessel designs or compliance requirements, an optional high-power air starter motor can be integrated, providing reliable starting capability even in cold or demanding ambient conditions.
Why choose HekoPower as your engine supplier?
HekoPower operates as an experienced Weichai X6170ZC408-1 supplier, managing technical validation, component matching, and export logistics. We ensure your propulsion system arrives with all genuine factory documentation, proper packaging for ocean transport, and complete component verification. Contact us today for direct technical support and a competitive quotation.
