This oil pump is manufactured to standardized specifications, delivering stable lubricant supply support for excavator engine operation in construction and mining working scenarios. It adopts high-strength cast iron structure, with good heat resistance to maintain stable performance under long-term high-load engine operating conditions, effectively reducing wear of internal engine moving components. The sealing assembly adopts precision machined O RING structure, maintaining flow integrity of lubricating oil during operation, avoiding leakage caused by vibration during construction operations. The product has undergone dimensional accuracy testing to ensure perfect matching with the corresponding engine assembly, reducing the difficulty of on-site replacement. It is suitable for harsh working conditions such as earthwork excavation and mineral transportation, providing reliable support for extending the service cycle of excavator power systems.