BMW E81 E82 E87 LCI F10 F11 123d N47S 535d N57S Diesel Fuel Injector 7805430

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E81 E82 E87 LCI F10 F11 123d N47S 535d N57S Diesel Fuel Injector is an original fuel system component designed for BMW diesel engines, ensuring precise fuel dosing and stable operation of the power unit. As part of the Injector nozzles group, it has been engineered for the demanding N47S and N57S engines, which translates into appropriate performance characteristics across the entire load range. This used OEM component is a sensible choice for professional repairs or service cost optimization without compromising on proper technical fitment.

Specifications and technical data

• SKU: 7805430-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805430
• Substitutable numbers: 13537805430, 7805430, 7800599, 13537805431, 7805431, 13537812055, 7812055, 13537800600, 7800600
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and compatibility

The presented fuel injector has been developed for diesel units installed in BMW 1 Series E81/E82 and 5 Series F10/F11 models in 123d, 535d versions, and related variants of the N47S and N57S engines. The component's design is adapted to the operating characteristics of modern BMW diesels, where precise control of the fuel dose at high common rail system pressure is crucial.

By using an original solution from the Injector nozzles range, the correct spray geometry is maintained, which directly impacts engine refinement, dynamics, and exhaust emission levels. This is particularly important in more powerful variants, such as the 123d or 535d, where the injection system operates under demanding load conditions.

Technical characteristics of the injector

The diesel fuel injector in this application is responsible for precise fuel dosing into the combustion chamber in several injection phases, which enables smooth torque development and reduced combustion noise. The applied technology allows for:

• stable maintenance of the fuel dose across a wide RPM range,
• correct formation of the fuel spray in the combustion chamber,
• effective utilization of the N47S and N57S engine potential in terms of performance and fuel consumption.

A properly selected injector is crucial for maintaining smooth operation of all cylinders, reducing smoke, and protecting cooperating components such as the turbocharger or diesel particulate filter. The correct spray characteristic also helps maintain exhaust system efficiency and stable emission parameters.

Practical application and benefits of installation

Replacing a fuel injector in a BMW diesel engine is recommended in case of starting problems, rough idling, power loss, or increased fuel consumption. Using an original component from the same design group allows you to:

• restore the proper refinement of the power unit,
• reduce the risk of further failures in the fuel system,
• maintain factory performance and engine flexibility parameters.

A used OEM injector is a solution that allows for optimizing repair costs while maintaining proper fitment for a specific engine variant. In practice, this translates into more predictable vehicle behavior than in the case of replacements with uncertain specifications.

Diagnostics and operation of the injection system

When planning an injector replacement, it is worth preceding the work with reliable computer diagnostics and measurements of the injection system's operating parameters. This allows you to confirm which cylinder requires intervention and whether it is necessary to replace a single component or the entire set. Good practice also involves checking the condition of the fuel, filter, and lines so that the newly installed injector operates under the most stable conditions possible.

If you want to better understand the symptoms of wear and the possible consequences of neglecting repairs, the article discussing typical diesel fuel system problems will be helpful: diesel injector faults – symptoms, effects, and diagnostics. This is a practical addition to your knowledge before making a decision to replace components in your BMW.

Selecting other elements from the Injector nozzles group

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional injectors, spray tips, or mounting accessories, check the available parts in the BMW Injector nozzles category.

When selecting used fuel system components, it is also worth familiarizing yourself with practical tips regarding the choice of original parts from the secondary market – our guide may be helpful: best used car parts – a guide to original components. This will make it easier for you to assess which solutions will be most suitable for your car in terms of technical and economic aspects.