BMW E46 E60 E65 X5 E53 330d 530d 730d 3.0d Fuel Injector Diesel M57N 7788609

BMW E46 E60 E65 X5 E53 330d 530d 730d 3.0d Diesel Injector M57N 7788609 is an original fuel system component for BMW M57N diesel engines, used in popular 3 Series, 5 Series, 7 Series, and X5 models. The injector ensures precise fuel delivery, stable engine operation, and proper performance in Diesel engines.

Specifications and technical data

• SKU: 7789661-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7789661
• Substitutable numbers: 13537789661, 7789661, 7788609, 0445110080, 0 445 110 080
• Fuel type: Diesel
• Category: Fuel Injectors

Application in BMW M57N Engines

The presented injector is designed for 3.0d engines from the M57N family, installed in BMW E46, E60, E65, and X5 E53 models in the 330d, 530d, and 730d versions. This solution is dedicated to diesel units where accurate high-pressure Diesel fuel injection is crucial, contributing to smooth operation, flexibility, and reduced smoke.

Thanks to its construction conforming to factory BMW standards, the injector works seamlessly with original engine accessories, control systems, and fuel systems, maintaining the manufacturer's specified parameters.

Construction and Technical Characteristics

The injector belongs to the category of Injector Nozzles, meaning it is responsible for shaping the fuel spray and atomizing it in the combustion chamber. In BMW M57N diesel engines, this directly impacts:

• stable mixture combustion across the full range of loads and speeds,
• maintaining proper power and torque while adhering to factory specifications,
• reduced fuel consumption due to precise dosing,
• lower exhaust emissions through correct diesel fuel atomization.

The component is designed as part of a common rail system, where maintaining the correct pressure and nozzle opening time is essential. Proper injector operation is significant for both vehicle dynamics and the longevity of other fuel system components.

Condition, Origin, and Fitment

The offered injector is an original BMW component from the aftermarket. Used condition means the part has been previously operated but is still suitable for further use after proper verification and installation according to service procedures. This is a solution for users seeking factory fitment and wishing to maintain the original engine operating characteristics while optimizing repair costs.

Thanks to assigned part numbers and interchangeable numbers, the injector can be precisely selected for a specific engine version and vehicle year. Before installation, it is recommended to compare the markings with the existing part and consult with a mechanic or the manufacturer's catalog.

Benefits of Using an Original BMW Injector Nozzle

Choosing an original BMW injector nozzle for the M57N Diesel engine offers a range of practical benefits:

• factory fitment to the engine unit – no need for modifications to the fuel or electrical system,
• maintaining manufacturer-specified operating parameters – correct injection pressure and opening time,
• compatibility with engine control unit software – proper dose correction and smooth idle operation,
• diagnosability using standard BMW service tools,
• optimization of repair costs compared to a new part while maintaining original specifications.

This is particularly important in more powerful 3.0d versions, where injection quality directly impacts the durability of the engine, turbocharger, and diesel particulate filter (if present in the specific configuration).

Diesel Injector Diagnostics and Operation

A malfunctioning injector nozzle can cause starting difficulties, rough idling, power loss, or increased exhaust smoke. For BMW M57N engines, it is advisable to address the first symptoms to avoid secondary damage. If you want to better understand the signs of wear and methods for checking fuel system components, check out the article Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails, where you will find practical tips on injector diagnostics and operation.

Other BMW Injector Nozzles

If you are also looking for other BMW injector nozzles for different engine versions or models, check out our dedicated category: BMW Injector Nozzles. This will allow you to easily compare available solutions and select the right part for your vehicle.