
WP6 Series · 6.75 L · Europe Stage IIIA / MAR-1
Excavator Engine WP6
Models: WP6G160E331 · WP6G175E301 · WP6G160A0 · WP6G175A0
For 20-22 t excavators
118–129 kW / 160–175 Ps
Power range (kW / Ps)
760 N·m / 1300–1500 rpm
Max torque speed (N·m / rpm)



At a glance
As an original Weichai diesel engine supplier, we supply the WP6 built as an Inline unit, with 6.75 L displacement. Rated output spans 118–129 kW (160–175 Ps). Peak torque reaches 760 N·m. It is supplied to meet Europe Stage IIIA emission requirements. Typical duty is excavator service.
Product Overview
A European-derived design refined for more than 20 years with over 600,000 units in service worldwide; highly reliable and offered with both electronically controlled high-pressure common rail and a mechanical pump route to suit customers in different markets.
Product Advantages
- Reliability. A wide installation base and a fully validated engine core make the product mature and dependable.
- Integration. A mid-mounted oil pan gives good packaging, with working tilt angles up to 35°.
- Comfort. A low-ratio gear train keeps noise low.
- Mature service network. More than 600,000 units in service worldwide, with mature support in overseas markets.
Specifications
| Power range (kW / Ps) | 118-129/160-175 |
| Max torque speed (N·m / r/min) | 760/1300-1500 |
| Emission standard | Europe Stage IIIA / MAR-1 |
| Fuel | Diesel |
| Engine type | Inline |
| Number of cylinders | 6 |
| Valves | 2 |
| Displacement (L) | 6.75 |
| Aspiration | Turbocharged, intercooled |
| Vehicle application | 20-22 t excavator |
| Engine dimensions (L×W×H) (mm) | 1206×730×1130 |
| Weight (G.W.) (kg) | 625 |
Note: product parameters and images are for reference only and are subject to change without notice.
Model Line-up
| Model | Rated power / speed (kW / rpm) | Max torque / speed (N·m / rpm) | Displacement (L) | Emission standard | Technology route | Application | Valves | Use | Type | Aspiration |
|---|---|---|---|---|---|---|---|---|---|---|
| WP6G160E331 | 118/2000 | 720/1300-1500 | 6.75L | Europe Stage IIIA, MAR-1 | CR | 20-22 t excavator | 2 | excavator | Inline 6-cylinder, four-stroke | Turbocharged, intercooled |
| WP6G175E301 | 129/2000 | 760/1300-1500 | 6.75L | Europe Stage IIIA, MAR-1 | CR | 20-22 t excavator | 2 | excavator | Inline 6-cylinder, four-stroke | Turbocharged, intercooled |
| WP6G160A0 | 118/2000 | 715/1400-1600 | 6.75L | MAR-1 | mechanical pump | 20-22 t excavator | 2 | excavator | Inline 6-cylinder, four-stroke | Turbocharged, intercooled |
| WP6G175A0 | 129/2200 | 714/1400-1600 | 6.75L | MAR-1 | mechanical pump | 20-22 t excavator | 2 | excavator | Inline 6-cylinder, four-stroke | Turbocharged, intercooled |
Request a Quote
Send the model designation (for example WP6G160E331), the required quantity and your destination port.
Technical details
The Weichai WP6 is built on a Inline configuration with 6 cylinders and 2 valves per cylinder architecture. Displacement is 6.75 L. Intake is turbocharged, intercooled. It is offered for diesel operation. For installation planning, the unit has overall dimensions of 1206×730×1130 and a dry weight of 625 kg.
Typical applications
The Weichai WP6 is specified for excavator duty. Confirmed applications include the following, and we can advise on suitability for your machine:
- Excavator
WP6 frequently asked questions
What is the power range of the Weichai WP6?
The WP6 covers 118–129 kW (160–175 Ps). Confirm the exact sub-model code before ordering, because output varies across the model line-up.
What peak torque does the WP6 deliver?
Maximum torque reaches 760 N·m. Torque is developed from 1300-1500 r/min. This figure governs how the machine pulls away from low engine speed, so check it against your gearbox ratios and duty cycle.
Which emission standard does the WP6 meet?
This unit is offered to Europe Stage IIIA. Tell us your destination market and we will confirm the certification route before shipment.
Is the WP6 a genuine Weichai engine?
Yes. Units are sourced through controlled supply channels to original factory specification and are supplied with export packing and documentation.
How is the WP6 shipped and how long does delivery take?
Engines are crated for export and consolidated at the port. Send your model designation, quantity and destination port for a firm quotation and lead time.
What is the configuration of the WP6?
The WP6 is built on a Inline, 6 cylinders, 6.75 L of displacement layout. Send us your machine model if you need confirmation that this layout fits your installation.

