BMW 1 3 Series E81 E87 E90 E91 120d 320d Diesel N47 Set Fuel Injection System

BMW E87 E90 E91 120d 320d N47 Injector Set is a complete set from the injector nozzles category, designed for BMW diesel engines from the N47 family, used in models such as the 1 and 3 Series. This is a solution for users who want to restore proper operation of the diesel fuel system while maintaining the original characteristics of the engine unit.

Specifications and technical data

• SKU: 7797877-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797877
• Substitutable numbers: 13518577643, 8577643, 7797874, 13537797877, 7797877, 13537809128, 7809128, 13537800601 13534740787 13517812051, 13517797876 13537809190 13537797878, 7800601 4740787 7812051 7797876 7809190 7797878
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and characteristics of the injector set

The injector set for BMW 120d and 320d with N47 engine has been developed for precise fuel metering in the common rail system. Appropriately selected injector nozzles ensure proper atomization of diesel fuel, which translates to stable engine operation, good running smoothness, and maintenance of factory parameters.

The component comes from the BMW OE group, meaning it retains original geometry, mounting points, and compatibility with factory engine control. This allows the injection system to work with the vehicle's electronics without the need for installation modifications or mechanical adaptations.

Benefits of using genuine BMW injector nozzles

For modern diesel engines, the use of appropriate injectors is crucial for the durability of the engine and its ancillaries. Using this set allows for:

• maintaining correct fuel pressure and dosage across the entire load range, which promotes smooth operation of the N47 unit,
• reducing smoke and power loss resulting from improper diesel fuel atomization,
• stabilizing idle speed and reducing vibrations transmitted to the body,
• preserving factory fuel consumption parameters, which helps maintain the efficiency of the exhaust system and exhaust gas treatment components.

The system is designed to work with diesel fuel, in accordance with the factory specifications of the N47 unit, which minimizes the risk of improper interaction with the high-pressure pump and engine control unit.

Condition, origin, and installation aspects

The offered BMW injector set for N47 engine is a used part from disassembly, which represents a cost-effective solution while maintaining original manufacturing quality. Such components are often chosen for routine repairs when precise fitment to a specific engine version and compatibility with factory control unit software are crucial.

Due to the precise nature of injector nozzle operation, installation in a specialized service center is recommended, using appropriate tightening procedures, bleeding the fuel system, and – if necessary – adapting parameters in the control unit. Properly performed installation allows for full utilization of the set's potential and reduces the risk of recurring faults.

Diagnostics and prevention for diesel injection systems

Malfunctioning injector nozzles can lead to a range of problems – from power loss and increased fuel consumption to mechanical engine damage. It is useful to be aware of typical symptoms and diagnostic procedures. Therefore, before installing or replacing fuel system components, it is advisable to consult the guide: diesel injector faults – symptoms, consequences, and diagnostics. This will help you better assess the condition of other components and plan a comprehensive repair.

Other BMW injector nozzles and parts selection

If you are looking for other BMW injector nozzles compatible with different engine versions or models of this brand, please use our dedicated category: BMW injector nozzles. This will facilitate the selection of a part that matches the specific engine code, year of manufacture, and vehicle equipment version, which is crucial for the proper functioning of the entire fuel system.