BMW 3 Series E46 Fuel Tank Breather Line Pipe Hose 7504304

BMW 3 Series E46 Fuel Tank Breather Line Pipe Hose is an original fuel system component, designed specifically for the 3 Series E46. As part of the Lines, hoses and pipes group, it ensures proper fuel vapor discharge and stable system operation, which translates into safe and predictable vehicle performance.

Specifications and technical data

• SKU: 7504304
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7504304
• Substitutable numbers: 13907558190, 7558190, 13907504304, 7504304, EM
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The offered fuel tank breather line is designed for BMW 3 Series E46 models and is compatible with the vehicle's factory fuel system. It is responsible for the controlled discharge of fuel vapors from the tank, which supports stable system pressure, correct engine operation, and compliance with fuel vapor emission requirements.

This element is part of the original system architecture, ensuring proper line routing, connection tightness, and fitment to body mounts and other components.

Construction and fitment for BMW E46

The line was designed by BMW as an OEM component, which means full compatibility with the factory specifications of the 3 Series E46. The shape, diameter, and terminal placement are adapted to the original connectors and brackets, which facilitates installation and minimizes the risk of leaks.

As a result, there is no need for modifications or fitting universal replacements – the line integrates into the existing system, maintaining the correct path and distance from components exposed to high temperatures.

Condition, origin, and benefits of using OEM parts

The offered line is a used part, sourced from the dismantling of an original BMW system. This type of OEM component ensures consistency with other fuel system elements, which is particularly important when repairing venting and vapor recirculation systems.

Using an original breather line instead of a worn or leaking component allows you to:

• restore the proper operation of the fuel system,
• reduce the risk of fuel leaks and odors around the vehicle,
• maintain compliance with the factory design of the BMW 3 E46.

Why choose this breather line

Replacing the breather line with an original BMW component is a beneficial solution in terms of both technical performance and operation. Factory fitment reduces installation time, and maintaining the correct line routing reduces the risk of chafing and damage during further use.

It is a practical choice for fuel system repairs in the BMW 3 E46, especially when problems with fuel odors, EVAP system-related errors, or line leaks occur.

Related items from the same group

If you are planning a comprehensive repair or upgrade of the fuel system area in your BMW and need other elements from the same group, such as return lines, breather hoses, or supply pipes, check out the available parts in the BMW Lines, hoses and pipes category.

Practical service tips

When replacing the fuel tank breather line in a BMW 3 E46, it is worth paying attention to the condition of the remaining sections of the installation and the mounts. Checking brackets, connectors, and adjacent lines helps avoid re-disassembly in the near future and makes it easier to maintain the tightness of the entire system.

For drivers interested in a broader perspective on drivetrain component operation and the selection of used components, the following guide may be helpful: Transmission: manual, automatic or DSG – common faults and a guide to buying a used transmission, which shows how to consciously approach the purchase of parts from the secondary market.