BMW E90 E91 E92 Fuel Pump Injection System Set 325d 330d Diesel N57 7805428

BMW E90 E91 E92 Fuel Pump Injection System Set 325d 330d Diesel N57 is a set of original fuel system components designed for BMW 3 Series diesel engines. This Fuel injector nozzle set ensures precise fuel dosing, stable engine operation, and proper compatibility with the factory engine control unit. It is a solution for users who expect compliance with factory specifications and wish to restore the engine's correct operating parameters.

Specifications and technical data

• SKU: 7805428-12
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805428
• Substitutable numbers: 13537805423, 7805423, 13537800124, 7800124, 13537805428, 7805428, 135185776547800123, 8577654, 13517800593, 7800593, 135377999921353779999413537799995, 779999277999947799995, 0445010617, 13537805429, 7805429
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and compatibility with Diesel engines

The presented set is dedicated to Diesel engines used in BMW E90, E91, and E92 models in 325d and 330d versions with the N57 engine. The design of the injectors is adapted to the operating parameters of these engines, which allows for maintaining proper injection pressure, the correct fuel spray pattern, and proper combustion of the mixture in the chamber.

Properly selected injectors are crucial for maintaining engine smoothness, reducing smoke, ensuring correct dynamics, and achieving economical fuel consumption. Using a set from the same series allows for maintaining consistency in injection characteristics across all cylinders.

Technical characteristics of the injector set

The fuel injector set has been designed as a common rail system component, working with the factory high-pressure pump and the BMW engine control unit. The precise design of the spray nozzles enables uniform fuel atomization, which translates into stable idle speed, better throttle response, and reduced engine vibration.

Injectors from this group are adapted to work in a wide range of loads, from low RPMs to dynamic acceleration, while maintaining proper tightness and repeatability of doses. As a result, the engine can maintain correct exhaust emission parameters and work efficiently with the turbocharging system and traction control systems.

Practical application and benefits of installation

Installing this injector set in a BMW 3 Series with an N57 engine is particularly recommended when symptoms such as rough idling, power loss, increased fuel consumption, or difficulty starting on a warm or cold engine occur. Replacing the set allows for restoring the consistency of injection parameters on all cylinders, which is essential for the long-term operation of a diesel unit.

The main benefits of using this set include, among others:

• more stable engine operation across the entire RPM range,
• reduced smoke and improved combustion quality,
• better throttle response,
• maintenance of factory fuel consumption parameters.

Condition, origin, and installation aspects

The injector set comes from the BMW range and is a component from the group of original parts used in factory fuel systems. The product is offered as used, which allows for economical repair while maintaining compliance with the vehicle manufacturer's solutions. Before installation, it is recommended to carry out a standard diagnostic procedure and injector adaptation in accordance with BMW service guidelines.

Professional installation in a specialized service or workshop dealing with diesel engines will allow you to fully utilize the potential of the set, as well as avoid problems related to leaks, incorrect tightening torque, or errors in the fuel system bleeding procedure.

Diagnostics and prevention of the injection system

The injection system in BMW 3 Series diesel engines is sensitive to fuel quality and service regularity. Early detection of irregularities in injector operation allows for avoiding more serious damage, such as excessive load on pistons, bearings, or the turbocharger. To better understand the typical symptoms of wear and ways to verify the condition of the injectors, it is worth reading the article Diesel injector faults – how to recognize them and the risks of neglecting them.

Expansion of the fuel system in BMW – related elements

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional injectors, nozzles, or fuel dose control elements, check the available parts in the BMW Fuel injector nozzles category.