 
 | Euro II Emission Standard | 
| Domestic strengthening pump | 
| Applicable for 7m bus | 
| Type | Model | Displacement (L) | Emission | Rated Power (kw/rpm) | Maximum Torque (Nm/r/min) | 
| YC4DSeries | YC4D130-20 | 4.214 | Euro II | 90/2800 | 380/1600 | 
| YC4D140-20 | Euro II | 103/2800 | 420/1600 |