BMW F40 120d F45 LCI 220d X1 F48 20d B47D Fuel Injector Injection System Set

BMW F40 120d F45 LCI 220d X1 F48 20d B47D Injection System Kit is a complete, used set of injection components for BMW diesel engines from the B47D family. The product is designed for discerning users seeking a factory solution for stable diesel fuel system operation.

Specifications and technical data

• SKU: 8579236-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8579236
• Substitutable numbers: 8579236, 13538579236, 8579230, 0445010775, 0 445 010 775, 8579240, 13538579240, 0445214371, 0 445 214 371, 0281006886, 0 281 006 886, 0445111009, 0 445 111 009, 8579948, 13538579948, 8587546, 13538587546
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Application in BMW B47D Engines

The presented BMW injection system kit is designed to work with B47D diesel engines used in, among others, BMW 1 Series F40, 2 Series Active Tourer F45 LCI, and BMW X1 F48 20d models. The use of a dedicated injection kit ensures proper engine operating parameters, such as uniform fuel delivery, correct injection pressure, and stable running characteristics at idle and under load.

The system is intended for vehicles powered by diesel fuel, which is crucial for compatibility with factory engine equipment, control unit maps, and the exhaust gas aftertreatment system.

Construction and Technical Characteristics of the Injection System

The offered product belongs to the Injector Nozzles category, but in this case, we are dealing with an advanced injection system, comprising interconnected components responsible for precise fuel delivery. The use of BMW OE class components ensures the preservation of factory flow parameters and spray characteristics, which translates to:

• stable fuel delivery across the entire RPM range,
• correct fuel spray formation in the combustion chamber,
• maintenance of factory performance and engine responsiveness,
• reduction of smoke and operating noise typical of malfunctioning injection systems.

The system has been developed specifically for B47D engines, ensuring compatibility with the factory engine control unit software and operating pressure parameters.

Benefits of Using an Original BMW Injection System

Choosing an original BMW injection system over random aftermarket replacements helps reduce the risk of starting problems, uneven cold running, and power loss. Key advantages include:

• factory fit for the B47D unit – no need for modifications to the fuel system or wiring harness,
• maintenance of correct combustion characteristics – important for the durability of pistons, valves, and the DPF filter,
• easier diagnostics – operating parameters fall within the manufacturer's specified ranges, facilitating data analysis with diagnostic tools,
• consistency with other common rail system components – the pump, rail, sensors, and control unit operate within the range specified by BMW.

Condition, Verification, and Vehicle Compatibility

The injection system is a used part, sourced from disassembly, offering a reasonable compromise between cost and maintaining original BMW specifications. Before installation, the standard workshop procedure is recommended: checking the fuel system for leaks, verifying operating parameters with a diagnostic tool, and, if necessary, adapting the injectors in the engine control unit according to the manufacturer's procedure.

To correctly select this product for a specific vehicle, it is advisable to compare the markings with the existing system and verify compatibility using BMW catalog numbers or a professional parts selection program. This minimizes the risk of installing a component with different characteristics than intended for a given engine variant.

Technical Support and Additional Materials

If you need more in-depth knowledge about diagnosing and typical symptoms of wear in diesel injection components, the article will be helpful: Diesel Injector Failures – How to Recognize Them and What Are the Consequences of Neglecting Them. You will find practical information there about symptoms that may indicate the need for replacement or repair of the injection system.

If you are also looking for other parts in the BMW injector nozzles category for your car, check out our dedicated offer: BMW injector nozzles. This will allow you to easily compare available solutions and choose the configuration best suited to your model.