BMW X5 E70 LCI F10 F11 535d 40dX N57S Diesel Fuel Injector Injection System Set

BMW X5 E70 LCI F10 F11 535d 40dX N57S Diesel Fuel Injector Injection System Set is a complete, used injection system designed for BMW N57S family diesel engines. It offers factory geometry and operating parameters, which allows for maintaining correct fuel dosing and stable engine operation. This is a solution for users looking for an original, structurally matched BMW part instead of replacements of unknown origin.

Specifications and technical data

• SKU: 7805430-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805430
• Substitutable numbers: 13537805430, 7805430, 7800599, 13537805431, 7805431, 13537812055, 7812055, 13537800600, 7800600, 8577655, 13518577655, 7805419
• Fuel type: Diesel
• Part type: Fuel Injector
• Category: Fuel Injectors

Purpose and compatibility

The presented injection set has been designed for Diesel engines used in BMW X5 E70 LCI models as well as 5 Series F10 and F11 in 535d and 40dX versions with the N57S unit. This ensures the maintenance of proper pressure parameters, injection timing, and operating characteristics, consistent with the manufacturer's factory specifications. Thanks to the use of original BMW technology, the system works with the factory engine control unit, common rail system, and accompanying equipment, which promotes stable idling, smooth acceleration, and correct engine performance.

Technical characteristics of the injection set

The set belongs to the group of components known as Injector Nozzles, responsible for the precise atomization of diesel fuel in the combustion chamber. In practice, this translates into:

• accurate fuel dosing across the full load range,
• correct formation of the injection spray,
• better engine performance at low and high RPMs,
• reduced smoke and improved exhaust emission parameters. The original BMW design ensures compatibility with factory engine control unit maps and proper cooperation with the high-pressure fuel supply system. Using a dedicated injection set helps maintain stable pressure in the common rail and reduces the risk of uneven operation of individual cylinders.

Benefits of using an original injection set

Choosing an original injection set for a BMW diesel engine brings a number of practical service and operational benefits:

• Factory fit – components designed specifically for the N57S unit, without the need for adaptation or modifications.
• Consistent operation with electronics – correct cooperation with the factory engine control unit and sensors in the fuel system.
• Stable operating parameters – reduction of problems with uneven idling, jerking, or power loss resulting from incorrect injection.
• Diagnostic support – easier interpretation of data from a diagnostic tester thanks to the preservation of original component characteristics. Due to the nature of diesel engine operation, a correctly selected injection set has a significant impact on the durability of the power unit, including the mechanical loads on pistons, connecting rods, and the crankshaft system.

Condition, verification, and service application

The offered item is in used condition, which allows for an economical repair of the fuel supply system while maintaining the original BMW specification. Before installation, it is recommended to perform a standard verification procedure of the injectors on a diagnostic bench and check the fuel system for leaks to ensure proper operation after installation. For workshops specializing in BMW service, this set can be a beneficial solution for N57S engine repairs, especially in cases where it is necessary to replace several injectors simultaneously or restore the complete system after a mechanical failure.

Substantive support and component selection

In case of symptoms such as starting difficulties, uneven idling, power loss, or increased smoke, it is worth checking the guide material Diesel injector faults – how to recognize them and the risks of neglecting them, which discusses typical symptoms and diagnostic methods for injection systems in diesel engines. If you are planning a comprehensive repair or upgrade of the fuel system area in your BMW and need other components from the same group, such as injectors, injector tips, or atomizing elements, check the available parts in the BMW Injector Nozzles category.