BMW E90 LCI Fuel Injection Rail High Pressure Fuel Rail 335i Petrol N55 7649710

BMW E90 LCI Fuel Rail Injector Lines 335i Gasoline N55 is an original fuel supply system component designed for the N55 engine in the facelifted 335i model. The fuel rail with fuel lines ensures stable injector supply, which translates to smooth engine operation and predictable throttle response.

Specifications and technical data

• SKU: 7649710
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7649710
• Substitutable numbers: 7649710, 13537649710, 7628049, 13537628049, 7576771, 13537576771, 7576772, 13537576772
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Function in the Fuel System

The fuel rail with a set of fuel lines is responsible for distributing fuel at the correct pressure to individual injectors in the N55 gasoline engine. A correctly selected component in this section of the fuel system is crucial for:

• stable engine operation across the full range of loads,
• precise gasoline dosing by the injectors,
• maintaining factory performance parameters and engine running culture.

In case of upgrades or repairs to the injection system in the 335i, using the original fuel rail with lines allows for maintaining compliance with the engine's factory operating characteristics.

Construction and Fitment for BMW 335i N55

The BMW fuel rail for the N55 engine has been designed as a component that works with a high-precision gasoline injection system. The construction includes:

• a rigid rail for distributing fuel to individual cylinders,
• dedicated fuel lines that deliver fuel to the injectors,
• mounting points adapted to the cylinder head and accessories of the N55 unit.

Thanks to its factory origin, the component ensures proper fitment with the injection system and compatibility with the accessories of the facelifted E90 LCI 335i engine.

Benefits of Using an Original Fuel Rail

Choosing an original fuel rail with fuel lines for the BMW 335i N55 helps reduce the risk of gasoline supply problems and simplifies system diagnostics. The most important advantages include:

• maintaining factory injection characteristics and response to load,
• correct fuel delivery to the injectors without undesirable pressure drops,
• better cooperation with the control electronics compared to aftermarket parts of uncertain origin,
• easier part identification and selection thanks to manufacturer markings.

This solution is particularly recommended for issues with uneven engine operation, power loss, or errors related to the gasoline injection system.

Component Condition and Practical Application

The offered fuel rail with fuel lines comes from an original BMW fuel supply system and is intended for reinstallation in the N55 gasoline engine. It is suitable for both standard repairs and comprehensive rebuilding of the injection system in the 335i, where maintaining the factory component configuration is important.

Before installation, the standard service procedure is recommended: leak testing, verification of the condition of the connection sockets, and installation using appropriate tightening torques, in accordance with BMW service documentation.

More BMW Injection System Components and Technical Knowledge

If you are looking for other BMW injector nozzles for your car, check out our dedicated category: BMW injector nozzles. There you will find a wide selection of injection system components tailored to various models of this brand.

Do you want to better understand the symptoms of wear and the principles of injection system diagnostics? See our guide: diesel injector faults – symptoms, consequences, and diagnostics, which helps to consolidate knowledge about injector operation and common fuel supply problems.