BMW E81 E87 LCI E92 120d 320d Diesel N47 Set Fuel Injection System

BMW E87 LCI E92 120d 320d N47 Injector Set is a complete set of components from the diesel engine fuel system, designed for N47 units in BMW 1 and 3 Series models. This product, from the Injector Nozzles category, ensures precise fuel delivery, leading to stable diesel engine operation and proper performance under load.

Specifications and technical data

• SKU: 7797877-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797877
• Substitutable numbers: 13537797882, 7797882, 13518577643, 8577643, 7797874, 13537797877, 7797877, 13537800667, 7800667, 13517812051, 13517797876 13537809190 13537797878, 13538511812, 8511812, 7812051 7797876 7809190 7797878
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Technical Characteristics

The presented injector set for BMW with N47 engine is designed to work with 120d and 320d diesel units. The injection system design in these engines requires precise fuel dose control, making appropriately selected injector nozzles crucial for maintaining correct operating parameters such as even combustion, adequate dynamics, and reduced emissions.

The system is intended for engines powered by Diesel fuel, which implies high requirements for sealing, pressure resistance, and spray quality. Using the correct injector set helps maintain stable rail pressure, improves cold starts, and reduces the risk of uneven idling.

Benefits of Using the N47 Injector Set

Selecting the right injection components for the N47 engine directly impacts its durability and user comfort. Using this set allows for:

• Improved Engine Operation – even fuel delivery reduces vibrations and RPM fluctuations.
• Stable Performance – proper diesel spray supports the maintenance of nominal power and torque.
• Better Throttle Response – an efficient injection system reduces the delay between pressing the accelerator pedal and the engine's reaction.
• Reduced Smoke Emission – correctly functioning injector nozzles decrease the amount of unburnt fuel in the exhaust.
• Support for Exhaust Gas Treatment Systems – even combustion facilitates the operation of the particulate filter and catalytic converter.

Condition, Origin, and Compatibility

The offered BMW injector set is a used part, an original component from the BMW OE group, meaning it is factory-fitted for the N47 engine fuel system. This ensures compatibility with the factory engine control unit maps, and installation does not require modifications to the powertrain unit.

The product is classified as used, which translates to a favorable cost-to-functionality ratio, especially for maintenance repairs on vehicles with mileage. A properly selected, original injector set helps avoid problems typical of cheap aftermarket alternatives, such as unstable injection pressure or accelerated wear of cooperating components.

Injector System Diagnostics and Prevention

Diesel engines are particularly sensitive to the condition of their injection systems. Symptoms such as difficult starting, power loss, increased fuel consumption, or characteristic knocking can indicate worn injector nozzles. It is advisable to familiarize yourself with typical symptoms and testing methods by consulting the guide: Diesel Injector Failures – How to Recognize Them and What Their Neglect Entails. Informed diagnostics allow for timely decisions regarding injector replacement before more serious engine damage occurs.

Alternative BMW Injector Nozzles and System Development

During a model's production, manufacturers often introduce fuel system modifications, leading to different part numbers and interchangeable numbers. The offered injector set has assigned reference numbers that facilitate selection for a specific N47 engine configuration. Before purchasing, it is advisable to compare the markings with your vehicle's data or seek assistance from a mechanic to confirm full compatibility.

If you are looking for other BMW injector nozzles for different models of this brand, check the available products in the category: BMW Injector Nozzles. This will allow you to easily select components for various engine versions, maintaining consistency with the manufacturer's original solutions.

Summary

The BMW E87 LCI E92 120d 320d N47 Injector Set is a sensible choice for users who want to restore proper diesel engine operation while maintaining the original manufacturer's specifications. Appropriately selected injector nozzles support stable performance, improve driving comfort, and help reduce the risk of costly failures resulting from incorrect fuel delivery. This is a practical solution for both routine repairs and comprehensive regeneration of the fuel system in N47 units.