BMW 3 Series E90 E91 M57N2 Complete Fuel Return Line Diesel 7801664

BMW E90 Fuel Supply Hose Diesel is a component from the Hoses, Pipes, and Tubes category, designed for the fuel supply system of diesel engines in BMW 3 Series E90 models. The original design ensures proper fuel routing, stable engine operation, and compliance with factory manufacturer requirements.

Specifications and technical data

• SKU: 7801664
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7801664
• Substitutable numbers: 13537801664, 7801664, 13537789776, 7789776, 13537789816, 7789816, 7801661
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The diesel fuel supply hose is responsible for safely delivering diesel fuel from the supply system to other components of the installation. For the BMW E90, the correct selection of this component is crucial for:

• maintaining proper fuel system pressure,
• stable operation of the diesel engine,
• limiting the risk of leaks and power loss,
• maintaining compliance with factory hose routing geometry.

Thanks to its precise fit for the BMW E90 platform, the hose maintains the correct routing, which facilitates installation and minimizes stress on the system.

Compatibility and Interchangeable Numbers

The offered hose belongs to the group of original BMW parts and has a dedicated OEM part number and assigned interchangeable numbers. This means it may appear in service documentation under different designations, but structurally corresponds to the same fuel supply component for Diesel engines. When selecting a part, it is advisable to compare the designations with your vehicle's data to confirm full compatibility.

Technical Characteristics and Advantages of Use

As an original BMW component, the fuel supply hose is designed for operation in the demanding environment of the engine bay. The construction considers:

• resistance to diesel fuel and typical operating temperatures,
• matched internal and external diameters for factory connectors,
• geometry that allows for correct routing within the engine unit,
• maintaining seal integrity with proper installation.

Using an original hose from this series helps to reduce problems associated with ill-fitting aftermarket parts, such as material stress, installation difficulties, or accelerated wear. This is particularly important in modern diesel injection systems, where stable fuel supply directly impacts engine running smoothness and emissions.

Part Condition and Service Application

The fuel supply hose is offered as a used part, making it an attractive solution for routine repairs and restoring the functionality of the fuel system in the BMW E90. This type of component is particularly useful in situations where:

• the original hose has suffered mechanical damage or abrasion,
• fuel leaks are present within the system,
• the component needs to be replaced with one that matches factory specifications.

A well-chosen hose from this range allows for the restoration of correct fuel flow without the need for costly new parts from an authorized dealer.

Other BMW Hoses, Pipes, and Tubes and Service Tips

If you are looking for other BMW Hoses, Pipes, and Tubes for your car, check out the BMW hoses, pipes, and tubes available in our assortment to select components tailored to your specific model and engine version.

When planning more extensive servicing of the fuel system or other components, it is worth familiarizing yourself with practical tips on car maintenance – you will find them in the article TOP 10 Most Frequently Replaced Parts in Your Car, which will help you plan service work and optimize vehicle maintenance costs.