WP4.1 Series
Founded in 1946, Weichai is one of the world’s largest Diesel and Natural Gas engine, commercial vehicle and equipment manufacturing groups. Weichai is headquartered in Weifang, China, and has subsidiaries and operations worldwide, with global brands such as Weichai, Kion, Linde, Ferreti, Baudoin, FastGear. It has 90,000 employees worldwide.
Data Sheet

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| Model | Prime Power/Speed (kW/rpm) | Displacement (L) | Emission Standards | Number of valves | Speed Regulation Mode | Engine Type |
|---|---|---|---|---|---|---|
| WP4.1G100E440 | 74/2200 | 4.088 | China non-road Stage Ⅳ | 2 | ECU | Inline 4-cylinder, four-stroke engine |
| WP4.1G125E440 | 92/2200 | 4.088 | China non-road Stage Ⅳ | 2 | ECU | Inline 4-cylinder, four-stroke engine |
| WP4.1G138E440 | 102/2400 | 4.088 | China non-road Stage Ⅳ | 2 | ECU | Inline 4-cylinder, four-stroke engine |
Product advantage
Emission requirements
- Meets non-road stage 4 emissions.
Power
- High torque at low speed, good acceleration
Economy
- Low speed, high mechanical efficiency – low fuel consumption
Comfort
- NVH custom development, low noise, low vibration
Environmental adaptability
- Can satisfy -25℃~45℃ environment, and can be used at altitude of 4000m