BMW F40 F48 G01 G30 B47 Overflow Return Fuel Pipe Line Hose 8587546

The BMW F40 F48 G01 G30 B47 Fuel Return Overflow Pipe is an original component of the diesel fuel supply system, designed for precise drainage of excess fuel from injectors in BMW engines of the B47 family. This product, from the injector nozzles category, ensures stable operation of the common rail system and helps maintain correct injection parameters in modern diesel units.

Specifications and technical data

• SKU: 8587546
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8587546
• Substitutable numbers: 8587546, 13538587546
• Category: Fuel Injectors

Purpose and Function in the Injection System

The BMW fuel return overflow pipe is responsible for the controlled return of excess diesel fuel from the injectors to the fuel system. A correctly selected component in this part of the installation:

• stabilizes the pressure in the common rail, which promotes even operation of all cylinders,
• limits the risk of air ingress into the system during startup and under load,
• supports precise fuel delivery, which translates to smoother operation of the B47 engine.

In BMW vehicles of the F40, F48, G01, and G30 series, a functional overflow pipe is crucial for maintaining correct injection characteristics, especially during dynamic driving and frequent load changes.

Compatibility with B47 Engine and BMW Platforms

The offered component has been designed for BMW diesel units of the B47 family, used in models such as the 1 Series (F40), X1 (F48), X3 (G01), and 5 Series (G30). Using an original overflow pipe in these constructions means:

• factory fit to the engine geometry and injection equipment,
• correct fuel routing without stress or unnatural bends,
• maintaining compatibility with the factory injector nozzle system and other fuel supply components.

This ensures a predictable installation process and reduces the risk of leaks due to poor fit.

Technical Characteristics and Benefits of Use

The fuel return overflow pipe in the BMW injection system plays a supporting role to the injector nozzles, but its condition directly impacts their operation. Replacing a worn or leaking component with an original part allows for:

• maintaining uniform fuel return from each injector,
• reducing the risk of leaks in the vicinity of the fuel rail and engine head,
• improving idle stability and throttle response,
• reducing the load on other injection system components through proper pressure distribution.

In practice, this translates to more predictable engine behavior for the B47 unit, which is important for both daily use and long-distance highway driving.

Product Condition and Service Application

The offered pipe is part of the used original BMW parts group, allowing for factory fit at a more favorable repair cost compared to new components. This type of part is particularly suitable for:

• repairs of diesel injection systems after identifying leaks or damage to return pipes,
• preventive replacement of components associated with injector nozzles during major service work,
• restoring the factory configuration of the fuel system after previous, non-original modifications.

For workshops specializing in BMW service, this is a practical solution that maintains compliance with the manufacturer's design while optimizing service costs.

Technical Support and Additional Materials

When diagnosing problems with the diesel fuel supply system, it is worth paying attention not only to the overflow pipes but also to the injector nozzles themselves. Detailed information on typical symptoms and the consequences of neglect can be found in the article: Diesel Injector Failures – How to Recognize Them and What Their Neglect Entails. This provides practical knowledge for planning repairs or upgrades to the injection system.

If you are also looking for other components from the BMW injector nozzles category for your car, check out the BMW injector nozzles available in our store to select a complete solution tailored to your specific model and engine version.