BMW E81 E87 LCI E90 E91 F20 F30 N47 Injector Fuel 7798446

Description

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E81 E87 LCI E90 E91 F20 F30 N47 Injector Fuel is a precision component of the BMW diesel engine fuel system, designed to work with the N47 unit in popular 1 Series, 3 Series, and F-series models. As an original component from the Injector Nozzles group, it ensures stable fuel dosing and supports smooth, refined engine operation. This solution is intended for users who require a technically matched injector for a specific generation of BMW diesel engines.

Specifications and technical data

• SKU: 7798446-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7798446
• Substitutable numbers: 13537798446, 7798446, 0445110289, 13537812881, 7812881, 13537798447, 7798447
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and compatibility with the N47 engine

The presented fuel injector has been developed for the N47 engine, widely used in BMW’s compact and mid-size models. The injector design is adapted to the characteristics of the diesel unit, which allows for:

• precise diesel fuel dosing across the entire rev range,
• stable operation at idle and under load,
• maintaining proper combustion parameters in the diesel engine.

By adhering to factory design specifications, the injector works seamlessly with the engine’s stock equipment, ECU, and fuel system, facilitating diagnostics and subsequent maintenance.

Technical characteristics of the diesel injector

As a component designed for a diesel unit, the injector operates under high-pressure conditions typical of modern diesel systems. The properly selected nozzle geometry and operating parameters allow for:

• accurate fuel atomization in the combustion chamber,
• reduced smoke and improved engine refinement,
• maintaining favorable fuel consumption parameters.

The injector belongs to the Injector Nozzles group, meaning it is a key element responsible for forming the fuel spray and interacting with the engine control system. Using a dedicated component helps maintain the integrity of the entire fuel system.

Condition, selection, and service application

The offered item is intended for installation as a replacement for the factory-fitted injector in a BMW diesel engine. In service practice, such a component is used both for replacing a single faulty injector and during more extensive work related to the fuel system, e.g., after identifying uneven engine operation, starting problems, or power loss.

To ensure proper selection, it is worth paying attention to:

• compatibility with the N47 engine generation,
• intended use for a diesel unit,
• consistency with other fuel injection system components in a given BMW model.

Benefits of using a dedicated BMW injector

Using a properly selected injector in a BMW diesel engine translates into a number of practical benefits. The most important include:

• Better engine refinement – even fuel dosing reduces vibrations and idle fluctuations.
• Stable combustion parameters – proper diesel atomization supports efficient fuel energy utilization.
• Support for proper control system operation – the injector works with the factory engine control software, which facilitates computer diagnostics.

Combined with a properly functioning high-pressure pump and a leak-free fuel system, such an injector helps maintain stable performance and predictable vehicle behavior in daily use.

Diagnostics and prevention of the injection system

When replacing an injector, it is worth paying attention to symptoms typical of diesel injection system wear, such as starting difficulties, uneven cold running, power loss, or increased fuel consumption. A detailed discussion of the symptoms and possible consequences of neglect can be found in the article: Diesel injector faults – how to recognize them and the risks of neglecting them.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other items from the same group, such as additional injectors, nozzles, or components related to the fuel system, check the available parts in the BMW Injector Nozzles category.