Breather Line BMW X1 E84 E90 E91 LCI Fuel Tank Pipe 7636124

BMW X1 E84 E90 E91 LCI N55 Fuel Vent Hose is an original BMW part from the injector nozzles category, designed to work with the N55 unit in X1 E84 and 3 Series E90/E91 LCI models. A properly selected vent hose stabilizes the fuel system's operation, supports correct engine fueling, and reduces the risk of injection system malfunctions.

Specifications and technical data

• SKU: 7636124
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7636124
• Substitutable numbers: 7636124, 13907636124, 7598707, 13907598707, 4601576, 13904601576
• Category: Fuel Injectors

Purpose and Role in the Fuel System

The vent hose in a BMW fuel system with an N55 engine is responsible for controlled venting of fuel vapors and pressure equalization within the system. A properly functioning element of this type:

• stabilizes injector nozzle operation by maintaining proper pressure conditions in the fuel system,
• reduces the risk of fuel delivery disruptions, which translates to smooth operation of the N55 unit,
• supports correct fuel tank ventilation, reducing the load on other system components.

Choosing a hose dedicated to specific BMW X1 E84 and 3 Series E90/E91 LCI models allows for maintaining the factory characteristics of the injection system and avoiding problems arising from the use of aftermarket replacements with incorrect geometry or stiffness.

Original BMW Origin and Replacement Numbers

The offered vent hose comes from the line of original BMW components, meaning it complies with the manufacturer's factory specifications regarding diameters, length, and routing. The element has an OEM designation and assigned interchangeable numbers, allowing for precise verification during selection by part number or vehicle VIN.

The presence of reference numbers facilitates the work of mechanics and professionals in BMW service – it allows for quick checking of compatibility with a specific body version and N55 engine variant, as well as comparison of the hose with the element currently installed in the car.

Condition, Verification, and Preparation for Installation

The hose is offered as a used part, which in practice means it comes from a dismantled vehicle and has been selected for its suitability for further use. Such elements are often chosen by workshops specializing in BMW because they:

• retain the original hose routing geometry in the engine bay,
• fit factory mounts and brackets without requiring modifications,
• maintain the integrity of the fuel system with other OEM components.

Before installation, a standard visual inspection of the hose is recommended for leaks, material flexibility, and the condition of the connection spigots. A correctly selected and functional vent hose minimizes the risk of leaks, fuel odors, and errors related to the injection system's operation.

Benefits of Using an Original Vent Hose

Using a vent hose dedicated to BMW X1 E84 and E90/E91 LCI with an N55 engine offers a range of practical operational benefits:

• Maintains stable injector nozzle operation through proper fuel system venting.
• Improved engine running smoothness – reduction of RPM fluctuations and occasional jerks resulting from fuel supply disruptions.
• Compatibility with BMW's factory design – no need for installation modifications, the hose follows the original routing.
• Supports long-term fuel system operation by reducing the load on other components, such as vent valves or injector nozzles.

For users who want to better understand the impact of fuel system components on diesel engine durability, an article describing diesel injector faults – symptoms, consequences, and diagnostic methods will be helpful, which discusses the relationships between the condition of accessories and the operation of the power unit in more detail.

Hose Selection and Other BMW Injector Nozzles

When selecting a vent hose for BMW X1 E84 or 3 Series E90/E91 LCI with an N55 engine, it is advisable to use the OEM number or VIN to confirm full compatibility with the specific vehicle version. In case of expanding or comprehensively repairing the fuel system, you may also need other elements from the same group. If you are looking for other BMW injector nozzles compatible with your model, check out our BMW injector nozzles category, where you will find a wide selection of original components.

More practical information on how original used BMW parts affect durability and driving precision can be found in the guide BMW – Sporty Performance and Precision vs. Selection of Original Used Parts, which discusses VIN/OEM selection procedures and application examples in popular models of the Bavarian brand.