WP12H Series · 11.5 L · China Stage VI / Euro VI / Euro V
Rear-Engine Bus Engine WP12H
Models: WP12H430E62 · WP12H430E68 · WP12H460E68 · WP12H500E68 · WP12H430E50 · WP12H400E30 · WP12H430E30
For rear-engine coach and tour buses of 12 m and above
294–368 kW / 400–500 Ps
Power range (kW / Ps)
2300 N·m / 950–1400 rpm
Max torque speed (N·m / rpm)
At a glance
As an original Weichai diesel engine supplier, we supply the WP12H built as an Inline unit, with 11.5 L displacement. Rated output spans 294–368 kW (400–500 Ps). Peak torque reaches 2300 N·m. It is supplied to meet Euro VI emission requirements. Typical duty is rear-engine bus service.
Product Overview
The WP12H is a benchmark large-displacement heavy-duty high-end power product. Inheriting the core technology of Weichai heavy-duty power, it passed rigorous endurance calibration across high temperature, extreme cold and high altitude scenarios, giving strong durability and a low failure rate. Its large displacement delivers full, forceful torque with rapid acceleration and strong climbing, so power is never short on complex roads. A highly modular design with a well-optimised structure, a high commonality rate for service parts and extended service intervals greatly reduce operating and maintenance cost.
Product Advantages
- An 11.5 L golden displacement with maximum power upgraded to 500 Ps and maximum torque of 2,300 N·m available from 950 rpm, so starts, climbs and overtaking are effortless.
- Developed on the Weichai 53% high thermal-efficiency platform, with a minimum fuel consumption rate of 168 g/kWh and fuel consumption 2 L per 100 km lower than comparable competing products.
- High-strength engine structure design, a one-piece cylinder head and high wear-resistance steel pistons for higher reliability.
- Service intervals of up to 100,000 km can be selected, lowering the cost of use.
Specifications
| Power range (kW / Ps) | 294-368/400-500 |
| Max torque speed (N·m / r/min) | 2300/950-1400 |
| Emission standard | China Stage VI / Euro VI / Euro V |
| Fuel | Diesel |
| Engine type | Inline |
| Number of cylinders | 6 |
| Valves | 4 |
| Displacement (L) | 11.5 |
| Aspiration | Turbocharged, intercooled |
| Vehicle application | Coach, tourism, fleet |
| Engine dimensions (L×W×H) (mm) | 1390×1262×1125 |
| Weight (G.W.) (kg) | 970 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| WP12H430E62 | 316/1800 | 2000/950-1400 | 9.5 | China Stage VI | Common rail + DOC + DPF + SCR | Coach, tourism, fleet | 4 | Bus | Inline | Turbocharged, intercooled |
| WP12H430E68 | 316/1800 | 2000/950-1400 | 9.5 | Euro VI | Common rail + DOC + DPF + SCR | Coach, tourism, fleet | 4 | Bus | Inline | Turbocharged, intercooled |
| WP12H460E68 | 338/1800 | 2200/950-1400 | 9.5 | Euro VI | Common rail + DOC + DPF + SCR | Coach, tourism, fleet | 4 | Bus | Inline | Turbocharged, intercooled |
| WP12H500E68 | 368/1800 | 2300/950-1400 | 9.5 | Euro VI | Common rail + DOC + DPF + SCR | Coach, tourism, fleet | 4 | Bus | Inline | Turbocharged, intercooled |
| WP12H430E50 | 321/1800 | 2000/950-1400 | 9.5 | Euro V | Common rail + SCR | Coach, tourism, fleet | 4 | Bus | Inline | Turbocharged, intercooled |
| WP12H400E30 | 294/1800 | 1800/800-1500 | 9.5 | Euro V | Common rail + SCR | Coach, tourism, fleet | 4 | Bus | Inline | Turbocharged, intercooled |
| WP12H430E30 | 316/1800 | 2000/950-1400 | 9.5 | Euro V | Common rail + SCR | Coach, tourism, fleet | 4 | Bus | Inline | Turbocharged, intercooled |
Request a Quote
Send the model designation (for example WP12H430E62), the required quantity and your destination port.
Technical details
The Weichai WP12H is built on a Inline configuration with 6 cylinders and 4 valves per cylinder architecture. Displacement is 11.5 L. Intake is turbocharged, intercooled. It is offered for diesel operation. For installation planning, the unit has overall dimensions of 1390×1262×1125 and a dry weight of 970 kg.
Typical applications
The Weichai WP12H is specified for rear-engine bus duty. Confirmed applications include the following, and we can advise on suitability for your machine:
- Rear-engine bus
WP12H frequently asked questions
What is the power range of the Weichai WP12H?
The WP12H covers 294–368 kW (400–500 Ps). Confirm the exact sub-model code before ordering, because output varies across the model line-up.
What peak torque does the WP12H deliver?
Maximum torque reaches 2300 N·m. Torque is developed from 950-1400 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 WP12H meet?
This unit is offered to Euro VI. Tell us your destination market and we will confirm the certification route before shipment.
Is the WP12H 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 WP12H 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 WP12H?
The WP12H is built on a Inline, 6 cylinders, 11.5 L of displacement layout. Send us your machine model if you need confirmation that this layout fits your installation.