High Pressure Pump BMW E87 E90 E91 M47N2 M57N2 Fuel Pump Diesel X3 7798333

High Pressure Pump BMW E87 E90 E91 M47N2 M57N2 Fuel Pump Diesel X3 is an original component from the Fuel pumps and level sensors category, designed for BMW diesel engines. It is a solution for users who want to restore proper diesel engine fuel supply while maintaining factory performance parameters and stable driving characteristics.

Specifications and technical data

• SKU: 7798333-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8511824
• Substitutable numbers: 13518511824, 8511824, 13517797413, 13517787199, 13517795714, 7797413, 7787199, 7795714, 13517805522, 13517807288, 7805522, 7807288, 7798333, 0445010146, BG
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and role in the fuel system

The described high-pressure pump is a component of the diesel fuel supply system in BMW X3, 1 Series, and 3 Series models equipped with M47N2 and M57N2 engines. It is responsible for precisely generating the required fuel pressure and metering it to the injectors, which directly affects the power, flexibility, and smooth operation of the engine.

By using an original pump from dismantling, compatibility with the factory fuel system architecture is maintained, as well as proper communication with the engine control electronics. This is particularly important in modern diesel units, where fuel pressure and dosage parameters are strictly controlled by the ECU.

Technical parameters and compatibility

The pump is designed to work with Diesel fuel, which ensures adequate resistance to pressure, temperature, and the chemical properties of diesel oil. The design is adapted to the specifics of the M47N2 and M57N2 engines, which require stable, high pressure in the common rail.

The component has a dedicated OEM part number and a set of interchangeable numbers, which facilitates selection via catalog, VIN number, or comparison with the currently installed pump. In practice, this means it can be directly replaced in place of a worn-out component without the need for modifications to the fuel system or mounts.

Condition, origin, and service application

The pump comes from a dismantled BMW vehicle and is offered as a used part, which allows for a significant reduction in repair costs compared to purchasing a new OEM component. This solution is often chosen for comprehensive fuel system repairs when it is necessary to replace several components at once.

Due to the nature of high-pressure pump operation, installation in a specialized workshop is recommended, following procedures for system bleeding, leak testing, and verification of operating parameters on a diagnostic tester. A correctly selected and installed pump restores stable starting, smooth idling, and proper dynamics under load.

Benefits of using an original high-pressure pump

• preservation of the factory operating characteristics of the BMW diesel engine,
• compatibility with the existing common rail system and engine controller,
• possibility of economical repair thanks to the use of parts from dismantling,
• reduction of the risk of starting problems, power loss, or rough cold running.

For users who want to better understand the principles of fuel system operation, diagnostics, and component selection by OEM numbers, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. It contains practical tips on the operation and regeneration of pumps and injectors in diesel engines.

Expansion and modernization of the BMW fuel system

If you are planning a comprehensive repair or modernization of the fuel system area in your BMW and need other components from the same group, such as supply pumps, in-tank pump modules, or fuel level sensors, check the available parts in the BMW fuel pumps and level sensors category.

In the case of more advanced work on BMW cars, including control electronics, it is worth considering the use of proven components from dismantling – especially for extensive service or renovation projects. Additional information on working with modules and electronic systems in BMW models can be found in the guide: how to take care of iDrive systems and electronic modules in BMW 3 and 5 series using parts from dismantling.

Summary

High Pressure Pump BMW E87 E90 E91 M47N2 M57N2 Fuel Pump Diesel X3 is a functional solution for drivers who want to restore the efficiency of the fuel system in a diesel engine while maintaining compliance with BMW factory standards. The original design, adaptation to M47N2 and M57N2 units, and the possibility of economical repair make it a practical choice for servicing modern diesel engines of this brand.