This product is a gear-type fuel feed pump for Mercedes-Benz OM457 / OM460 engines.

Part Number: 4570910401 Interchangeable Part Numbers: 4570910101, 4570910201, 4570910601, 4600900150

Suitable for Mercedes-Benz inline 6-cylinder diesel engines OM457 and OM460. Fits Mercedes-Benz heavy-duty trucks: Actros, Axor, Antos, Arocs. It can also be used on Mercedes-Benz coaches and buses equipped with the above engines.

As a low-pressure fuel supply component of the engine, it adopts an external meshing gear pump structure. Driven by the engine gear, it draws diesel fuel from the fuel tank and builds stable low fuel pressure to deliver fuel to the high-pressure fuel pump. This ensures sufficient fuel supply at the inlet of the high-pressure pump and prevents cavitation and wear of the high-pressure pump. A built-in overflow valve inside the pump body stabilizes the output fuel pressure. When pressure exceeds the set value, fuel returns to maintain stable oil circuit pressure.

Wear on gears and end faces increases internal leakage and leads to insufficient fuel supply pressure, resulting in hard starting and weak vehicle power. Aging seals cause fuel leakage. Gear seizure directly cuts off fuel supply, and the engine fails to start.