This engine oil pump is the core power component of the engine lubrication system for FAW Jiefang heavy trucks. It pressurizes and delivers lubricating oil to each friction pair of the engine, providing continuous oil supply for lubrication, cooling and cleaning of crankshaft, connecting rod, camshaft and other moving parts. Adopting gear-type oil pumping structure and high-strength cast iron housing, it maintains stable oil supply pressure under high temperature and frequent vibration of long-haul heavy-load driving. Every oil pump undergoes oil pressure characteristic test and leakage inspection before delivery. It solves common faults such as low engine oil pressure, insufficient lubrication and oil pump abnormal noise, serving as an essential replacement spare part for engine overhaul.