Yuchai
Yuchai YC6T660L-D21
6T
The Yuchai YC6T660L-D21 is a 16.35-litre inline-6 diesel engine for generator sets, rated at 550 kVA / 440 kWe standby power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in China.
- Standby Power · 50 Hz
- 550 kVA
- Electrical Output
- 440 kWe
- Cylinders
- L6
- Displacement
- 16.35 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 444.4 | 400 | 500 |
| Standby Power | 488.9 | 440 | 550 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 444.4 | 400 | 500 |
| Standby Power | 488.9 | 440 | 550 |
Technical Specifications
| Brand | Yuchai |
| Model | YC6T660L-D21 |
| Series | 6T |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 16.35 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | China National Stage II / Unregulated |
| Country of Origin | China |
Frequently asked questions
What is the power output of the Yuchai YC6T660L-D21?
The Yuchai YC6T660L-D21 is rated at 550 kVA standby / 500 kVA prime at 50 Hz (1,500 rpm); and 550 kVA standby / 500 kVA prime at 60 Hz (1,800 rpm).
Does the YC6T660L-D21 run at 50 Hz or 60 Hz?
The Yuchai YC6T660L-D21 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Yuchai YC6T660L-D21 use?
The Yuchai YC6T660L-D21 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the YC6T660L-D21?
The Yuchai YC6T660L-D21 is an inline-6 (6-cylinder) engine with a displacement of 16.35 L.
Is the Yuchai YC6T660L-D21 still in production?
Yes — the Yuchai YC6T660L-D21 is a current production model.
Is a datasheet available for the YC6T660L-D21?
Yes — an official Yuchai datasheet for the Yuchai YC6T660L-D21 can be downloaded from this page.
Related Engines
Compare Yuchai YC6T660L-D21
Reference
- Canonical page
- /engines/yuchai-yc6t660l-d21
- Last database update
- 2026-05-29
- Manufacturer files
- 1 datasheet linked
Need this engine?
Haifeng Machinery supplies diesel and gas generators and engines worldwide.
Get a Quote ↗Or browse Haifeng's diesel generator sets ↗