This oil pump is engineered for stable operation in demanding construction and mining excavation scenarios, delivering consistent lubricant flow to support prolonged heavy load operation of excavator engine systems. Manufactured to standardized specifications, it features high structural durability and heat resistance, adapting to the high temperature and high vibration working environment of excavator engine compartments effectively. The precision machined internal structure ensures smooth lubricant delivery, minimizing operational wear of core engine components to extend the overall service life of the power system. It adopts physical interception structure design at the inlet port, blocking large solid debris mixed in the lubricant to maintain flow integrity, avoiding abnormal wear of engine moving parts caused by foreign matter intrusion. The product undergoes strict dimensional and performance testing before leaving the factory, ensuring consistent fitment with the corresponding engine mounting position, reducing installation difficulty and shortening maintenance downtime for users.