BMW X5 E53 E60 E65 M57N Diesel Injector Pressure Hose Assy 7804237

The BMW X5 E53 E60 E65 M57N Diesel Injector Pressure Hose is an original fuel system component designed for BMW M57N diesel engines. This used pressure hose ensures proper fuel delivery to the injector, supporting stable engine operation and correct injection characteristics.

Specifications and technical data

• SKU: 13537804237
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 13537804237
• Substitutable numbers: 7804237, 13537804237, 7789732, 13537789732, 7788793, 13537788793, 7789735, 13537789735
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Function in the Injection System

The injector pressure hose operates in the high-pressure fuel area of a Diesel engine, therefore its construction must ensure resistance to hydraulic loads and operating temperatures. In M57N units, it is responsible for precisely delivering diesel fuel to a specific injector, which directly impacts:

• stable engine operation across the full RPM range,
• correct fuel metering by the injector,
• maintaining proper rail pressure and at the injector tip.

Selecting the correct hose for a specific M57N engine configuration is crucial for maintaining the injection system's factory operating parameters.

Benefits of Using an Original Pressure Hose

For BMW diesel engines, using the appropriate injector pressure hose translates into a number of practical operational benefits:

• Improved engine refinement – proper pressure and stable fuel supply reduce vibrations and uneven idling.
• Reduced risk of leaks – a correctly selected component minimizes the chance of fuel leaks in the high-pressure zone.
• Support for proper injector function – uniform supply helps maintain the correct fuel spray pattern and injection timing.
• Safe Diesel system operation – proper fuel flow is essential for protecting the high-pressure pump and the injectors themselves.

Application in BMW M57N Diesel Engines

The presented component is designed for Diesel fuel systems in BMW models equipped with the M57N engine. In practice, this means it works with an advanced common-rail injection system where the quality and condition of the pressure lines are of great importance for:

• maintaining adequate operating pressure across the entire load range,
• efficient operation of injector nozzles in the "Injector Nozzles" category,
• reducing smoke and power loss resulting from improper fuel supply.

Replacing a worn or damaged hose with a functional component is one of the basic steps in diagnosing problems with the fuel injection system in BMW diesel engines.

Condition, Origin, and Installation Aspects

The offered injector pressure hose is an original BMW part from the "Injector Nozzles" category, sourced from disassembly. This used component allows for economical repair of the fuel system while maintaining factory geometry and fitment with the M57N engine's ancillaries.

• Factory fitment – designed for the specific architecture of the BMW engine.
• Correct connection geometry – facilitates installation into the existing system without modifications.
• Compatibility verification by numbers – part numbers and replacement numbers are available in the technical specifications section.

Before installation, standard inspection of the injection system is recommended, along with the application of appropriate tightening torques in accordance with BMW service documentation, to ensure leak-free and safe operation in the high-pressure zone.

Diagnostics and Technical Knowledge

Problems with pressure hoses and diesel injectors often manifest as difficult starting, power loss, increased smoke, or uneven engine operation. It is worth familiarizing yourself with practical diagnostic tips found in the article "Diesel Injector Faults – How to Recognize Them and What Their Neglect Entails". This will allow for a better assessment of the entire system's condition and selection of the appropriate scope of repairs.

Related BMW Injector Nozzles

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 complete the entire fuel system based on original components from this brand.