What engine is in a Yutong bus?

Yutong buses are equipped with a variety of diesel engines depending on the model, with common types including Yuchai (YC) series and Weichai (WD) series. For example, the ZK6128HG model uses the Cummins ISBe4+250B engine, which has a maximum power of 250 horsepower and meets Euro 4 emission standards; the ZK6127HP1 is equipped with the YC6G300-20 engine, with a displacement of 7.8 litres and an output power of 221kW (approximately 300 horsepower), suitable for high passenger capacity requirements. Yutong's engine technology focuses on fuel economy and reliability, with some new models already supporting Euro 5 emission standards and reducing maintenance costs through modular design. Right-hand drive versions (such as the used ZK6126) usually retain the same power configuration but adjust emission parameters according to local regulations.