Fuel Injection Rail BMW F20 F30 LCI X1 F48 High Pressure Rail Petrol B48 7639979

BMW F20 F30 Fuel Injector Rail Pipe B48 Petrol 7639979 is an original fuel supply system component designed for B48 engines in BMW F-series models. This used injector rail ensures a factory fit to the engine unit and allows for the maintenance of correct injector system operating parameters.

Specifications and technical data

• SKU: 8694198
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8694198
• Substitutable numbers: 13538694198, 8694198, 13537639979, 7639979
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Function in the Injector System

The fuel injector rail/pipe for BMW F20 and F30 operates within the high-pressure petrol injection system of the B48 engine. Its function is to evenly distribute fuel to the injectors, stabilize fuel rail pressure, and maintain the overall tightness of the circuit.

In direct-injection petrol engines, a correctly selected injector rail is crucial for:

• stable engine operation across the full load range,
• precise fuel delivery by the injectors,
• maintaining correct fuel pressure throughout the system,
• reducing the risk of leaks and power loss.

Compatibility with B48 Engine and Petrol Fuel

The presented injector rail is designed for B48 petrol engines used in the BMW F20 and F30. The component's construction is optimized for operation with petrol, which translates to appropriate material resistance and correct flow characteristics.

Thanks to its original origin, the part retains:

• geometry consistent with the original B48 engine equipment,
• correct mounting points to the cylinder head and accessories,
• compatibility with the standard injectors used in this unit.

Characteristics of a Used Injector Rail

The offered injector rail is a used part, sourced from disassembly. Such components are often chosen as an economical alternative to new parts, while maintaining the original manufacturer's specifications. For an injector rail, it is particularly important that:

• the body integrity is maintained without mechanical damage,
• the connection sockets allow for a leak-proof installation of pipes and injectors,
• the arrangement of the outlets matches the factory layout in the specific engine.

Choosing an original, used injector rail allows for maintaining the consistency of the entire fuel supply system with other OEM components.

Benefits of Using an Original BMW Injector Rail

The use of an original BMW injector rail in the B48 engine translates into a number of practical operational benefits:

• factory fit to the engine cylinder head and accessories, without the need for modifications,
• consistency with the factory engine control unit calibration, which facilitates diagnostics and servicing,
• maintaining predictable engine behavior during changes in load and rotational speed,
• reducing the risk of fuel pressure problems, typical for incorrectly selected aftermarket parts.

For users who are modernizing or servicing the fuel system in a BMW F20/F30 with a B48 engine, choosing an original injector rail is a technically safe and cost-effective solution compared to new parts.

Technical Support and Additional Materials

If you are considering comprehensive fuel system maintenance, it is worth remembering that the correct operation of the injector rail is closely linked to the condition of the injectors. Symptoms of incorrect injector operation, even in petrol engines, can be similar to those known from diesel units. For a better understanding of the topic, you can refer to an article describing diesel injector faults – symptoms, consequences, and diagnostic methods, which helps to organize knowledge about typical injection problems.

If you are looking for other parts in the injector nozzles category dedicated to this brand, check out the BMW injector nozzles available in our store to select a complete solution for your fuel system.