BMW E60 E61 M57N M57N2 Diesel Engine Fuel Delivery Feed Line Pipe 7799972

BMW E60 E61 M57N M57N2 Fuel Feed Line is an original part of the diesel fuel supply system, designed for BMW diesel engines from the M57N and M57N2 family. Thanks to its factory geometry and appropriate diameter, it ensures a stable fuel supply to the engine unit, which translates into correct engine operation and predictable performance. A used OEM component is a sensible choice for fuel system service when you prioritize compatibility with the factory installation.

Specifications and technical data

• SKU: 7799972-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7799972
• Substitutable numbers: 13537799972, 7799972, 13537796797, 13537790066, 13537793575, 7796797, 7790066, 7793575, KZ
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The fuel feed line in BMW E60 and E61 models with M57N / M57N2 engines is responsible for transporting diesel fuel from the low-pressure part of the system to further supply components. A correctly selected line minimizes the risk of pressure drops, air ingress, and leaks, which can result in starting problems, uneven engine operation, or power loss.

This component from the Lines, Hoses, and Tubes category is crucial for maintaining the fuel system's integrity in a diesel engine, where precise fuel metering directly impacts running smoothness and fuel consumption.

Compatibility with M57N / M57N2 Engines

The offered line has been specifically designed for BMW M57N and M57N2 diesel units used in the 5 Series E60 and E61. This means:

• maintaining factory mounting points in the engine bay,
• an internal diameter suitable for diesel fuel flow,
• compatibility with original fuel system accessories.

As a result, the line can be integrated into the existing system without modifications, simplifying the mechanic's work and reducing vehicle downtime.

Characteristics of a Used OEM Component

As a used part, the BMW fuel feed line retains the original manufacturer's specifications regarding shape, length, and connection method. In practice, this means a precise fit to the factory system, unlike many aftermarket replacements that require adaptation or the use of additional connectors.

A used part from the Lines, Hoses, and Tubes group can be particularly beneficial for:

• routine repairs after detecting leaks,
• mechanical damage to the line in the engine bay,
• restoring the original configuration after previous modifications.

Importance of Selecting the Correct Line for a Diesel Engine

In diesel-powered engines, the tightness and resistance of fuel lines are of particular importance. An incorrect or worn line can cause air to be drawn in, fuel leaks, and disruptions to the pump and injector operation. Using an original fuel feed line dedicated to BMW E60/E61 with M57N / M57N2 helps mitigate these risks and maintain stable engine operating parameters.

Expanding Fuel System Service

If you are planning a comprehensive repair or engine area upgrade for your BMW and need other parts from the same group, such as additional supply lines, return lines, or flexible fuel hoses, check the available parts in the BMW Lines, Hoses, and Tubes category.

For larger upgrade projects or when restoring a vehicle to full operational status, it's also worth considering interior comfort and ergonomics. You can find inspiration and practical tips for using used components in the article Car Interior Tuning with Global Parts, which demonstrates how to effectively combine functionality with a reasonable budget.