WP6 Marine Diesel Engine


Weichai WP6 marine diesel engine series is the variation developed in accordance with laws and regulations based on marine engine working conditions and modification of engine combustion system, intake and exhaust system, cooling system, power output system and engine monitoring system. The engine has wide power and speed range, small size, light weight, compact structure, reliable work, advanced parameters and easy installation.

Product Parameters

Series 4-Stroke, Water cooling, In-Line, Dry cylinder sleeve
Cylinder Diameter/Stroke 105×130mm
Specific lub-oil consumption 195g/kW-h
Start Mode Electric start
Firing Order 1-5-3-6-2-4
Noise ≤117dB (A)
Oil Consumption 0.8g/ kW·h
Number Of Cylinders 6
Displacement 6.75L
Crankshaft Rotation Direction (towards free end) Clockwise
Idling 650±30r/min
Smoke Intensity ≤1.2Rb
Emission Standard IMO TIER II

Product Spectrum

Model Air intake Rated Power (kW/Ps) Speed (r/min)
WP6C122-15 Booster 90/122 1500
WP6C140-23 Booster 103/140 2300
WP6C142-18 Booster 105/142 1800
WP6C150-15 Supercharged and cold 110/150 1500
WP6C156-21 Booster 115/156 2100
WP6C163-23 Booster 120/163 2300
WP6C165-18 Supercharged and cold 122/165 1800
WP6C185-21 Supercharged and cold 136/185 2100
WP6C198-23 Supercharged and cold 145/198 2300
WP6C220-23 Supercharged and cold 162/220 2300
WP6C250-25 Supercharged and cold 168/250 2425
WP6C250-23 Supercharged and cold 168/250 2230


Product parameters and portfolio are for reference only. For fishing vessel engine portfolio, please contact relevant personnel for official information.

Product Features

Minimum fuel consumption low to 195g/kW-h.

Reasonable fuel pump and turbocharger for smooth fuel consumption curve and excellent economy under common working conditions.

Engine shut-down solenoids for fast, safe and reliable shut-down.

Advanced German technology with high-quality parts and high product reliability.

Advanced design concept with optimized structure for users' habits and is easy to install and maintain.

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