Yuchai it's one of the biggest engine manufacturing plant in the world... Afaik makers din yan ng WArtsila engines.. Wartsila engines is used by power plants in different parts of world... That runs contineously for years... Pero madami din makers ng Yuchai sa china.. Kaya alamin nyo kung Saan factory ng Yuchai ginawa...
If I were you get a oem cummins engine nalang to be sure... China made pero matibay din... Ginagamit sa mga IH head.. Kta19 Ang engine model Na gamit.. Kung bus Lang, Ntaa engine Lang... Pag nag overhaul kayo hindi din naman mahal parts at madami na Kasi lumabas na cummins engine... Importante Lang magaling mag overhaul ng cummins engine ang mechanico na gagawa... Hindi uubra Mga mechanico ng sasakyan..