WD12C400-21 Marine Main Propulsion Engine Product Introduction
The WD12C400-21 is a 400-horsepower high-speed marine main propulsion diesel engine from WEICHAI, based on Steyr technology upgrades. It emphasizes maturity and reliability, moderate power, economical fuel consumption, and convenient maintenance. Suitable for medium-sized inland/coastal fishing vessels, transport ships, and workboats, it is a mainstream main engine model in the 400-horsepower segment.
I. Core Technical Parameters
Model: WD12C400-21
Type: Four-stroke, inline 6-cylinder, water-cooled, turbocharged intercooled, direct injection, dry cylinder liner
Bore × Stroke: 126 × 155 mm
Displacement: 11.596 L
Rated Power / Speed: 294 kW (400 HP) / 2100 r/min
Maximum Torque: 2350 N·m / 1300~1500 r/min
Torque Reserve: 25%~30%
Minimum Fuel Consumption Rate: ≤195 g/kW·h
Oil Consumption Rate: ≤0.5 g/kW·h
Emissions: Meets IMO Tier II
Starting Method: 24V electric start
Net Weight: Approx. 1150 kg
Dimensions: 1620 × 850 × 1360 mm
Overhaul Life: ≥15000 hours
Idle Speed: 650 ± 30 r/min Noise ≤105 dB(A)
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