Engine Series: WEICHAI. YUCHAI . CUMMINS. YIQI. ZHAOCHAI. YUNNEI. YANGCHAI and CHANGCHAI cylinder linerpistonpiston ringpiston pinintake & exhaust ... Factory, Zhengzhou Yutong Bus Guilin and Jinan Heavy Truck.Engine Series: WEICHAI. YUCHAI . CUMMINS. YIQI. ZHAOCHAI. ... DC498, DC6113, DC6DEL, DC4D32 QUANCHAI: QC485, QC490, QC495 CHANGCHAI: N485, N495, N485QA LAIYANG: LL480, LL495, 4D30Y CHENGDU: ...